Number

1,019

Positive
Odd
Prime
4 digits

1,019 is an odd 4-digit integer and a prime number. It has 2 divisors and a digital root of 2.

The canonical address for this page is /1019.

Number properties

ParityOddnot divisible by 2

SignPositive

PrimalityPrime

Absolute value1,019

Digit count4

Digit sum11

Digital root2repeated digit sum

PalindromicNoreads differently backwards

Happy numberNosquared-digit sums reach 1

Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation1,019

Distinct prime factors11,019

Number of divisors2

Sum of divisors σ(n)1,020

Aliquot sum1sum of the proper divisors

ClassificationDeficientthe aliquot sum is less than the number

Euler's totient φ(n)1,018integers below n that share no factor with it

SquarefreeYesno repeated prime factor

All divisors1, 1,0192 in total

Arithmetic

Previous number1,018

Next number1,020

Double2,038

Half509.5

Square1,038,361

Cube1,058,089,859

Square root31.921779399≈irrational, shown to 9 decimal places

Cube root10.062936403≈

Negation-1,019

Reciprocal0.0009813543≈

Representations

Decimal1,019

Binary111111101110 bits

Octal1773

Hexadecimal3FB

Base 36SB

Roman numeralMXIX

In wordsone thousand and nineteen

Ordinalone thousand and nineteenth

Scientific notation1.019 × 10^3

Engineering notation1.019 × 10^3

Nearest landmarks

Next prime1,021+2

Previous prime1,013−6

Distance to nearest prime0, it is prime

Nearest square below961

Nearest square above1,024

Powers & multiples

1,019 to the power 21,038,361

1,019 to the power 31,058,089,859

1,019 to the power 41,078,193,566,321

1,019 to the power 51,098,679,244,081,099

First ten multiples1,019, 2,038, 3,057, 4,076, 5,095, 6,114, 7,133, 8,152, 9,171, 10,190

Powers of twoBetween 2^9 (512) and 2^10 (1,024)

Divisibility tests

Divisible by 2No, remainder 1

Divisible by 3No, remainder 2

Divisible by 4No, remainder 3

Divisible by 5No, remainder 4

Divisible by 6No, remainder 5

Divisible by 7No, remainder 4

Divisible by 8No, remainder 3

Divisible by 9No, remainder 2

Divisible by 10No, remainder 9

Divisible by 11No, remainder 7

Divisible by 12No, remainder 11

Divisible by 100No, remainder 19

Collatz (3n + 1) trajectory

Steps to reach 162the total stopping time

Highest value reached5,8125× the starting value

Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven

First steps1,019 → 3,058 → 1,529 → 4,588 → 2,294 → 1,147 → 3,442 → 1,721 → 5,164 → 2,582 → …

Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage101,900%

1,019% as a decimal10.19

1,019% of 1001,019

1,019% of 1,00010,190

As a fraction of 1001,019/100

Read another way

As seconds16 minutes and 59 seconds

As bytes1,019 B

As a year1019 AD

As a 24-bit colour#0003FB

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Neighbouring numbers

Derived from 1,019

Nearby primes

#001019 (colour)

#001019
Blue
Dark
Nearest: Black

#001019 is a blue with RGB values 0, 16, 25 and HSL 202°, 100%, 5%. It is a dark colour, so white text on it reaches 19.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Open this reading on its own page →

Colour values

#001019#001019

HEX#001019

RGBrgb(0, 16, 25)

RGB (0–1)0, 0.0627, 0.098

RGB percentages0%, 6.3%, 9.8%

HSLhsl(201.6, 100%, 4.9%)

HSV / HSBhsv(201.6, 100%, 9.8%)

CMYK100%, 36%, 0%, 90.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,121

CSS custom property--colour: #001019;

Brightness & contrast

Relative luminance0.00441WCAG 2.x, 0 is black and 1 is white

Perceived brightness14.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 19.3:1

Contrast with white19.3:1WCAG normal text: AAA

Contrast with black1.09:1WCAG normal text: Fail

Greyscale equivalent#0D0D0D

Inverted#FFEFE6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0B1019no red cones; affects about 1% of men; ΔE 3.1 from the original

Deuteranopia#070D19no green cones; the most common form, about 1% of men; ΔE 3.4 from the original

Tritanopia#001213no blue cones; rare, and affects men and women equally; ΔE 5.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text19.3:1WCAG large text: AAA

Contrast with black, large text1.09:1WCAG large text: Fail

Named colours

Black · ΔE 8.6 Dark slate grey · ΔE 29 Dim grey · ΔE 41.1 Slate grey · ΔE 49 Gray · ΔE 50.2 Teal · ΔE 51.6

Nearest named CSS colourBlack (#000000)ΔE 8.59, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#190900

Analogous#001916, #000319

Triadic#190010, #101900

Split complementary#190003, #191600

Tetradic#160019, #190900, #031900

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#0093E5

Lighter +30%#0072B2

Lighter +20%#00517F

Lighter +10%#00314C

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001019

Less saturated −25%#030F16

Channel breakdown

G16

B25

Red0 (0%)

Green16 (6.3%)

Blue25 (9.8%)

Hue201.6°

Saturation (HSL)100%

Lightness4.9%

Dominant channelBlue

Hex per channelR 00 · G 10 · B 19

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

1,019

Number properties

Factors & divisors

Arithmetic

Representations

Nearest landmarks

Powers & multiples

Divisibility tests

Collatz (3n + 1) trajectory

As a percentage & fraction

Read another way

Keep nerding

Neighbouring numbers

Derived from 1,019

Nearby primes

Other readings

#001019 (colour)

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else