Number

1,988,018

Positive
Even
Composite
7 digits

1,988,018 is an even 7-digit integer and a composite number. It has 6 divisors and a digital root of 8.

Number properties

ParityEvendivisible by 2

SignPositive

PrimalityComposite

Absolute value1,988,018

Digit count7

Digit sum35

Digital root8repeated digit sum

PalindromicNoreads differently backwards

Happy numberNosquared-digit sums reach 1

Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation2 × 997^2

Distinct prime factors22, 997

Number of divisors6

Sum of divisors σ(n)2,985,021

Aliquot sum997,003sum of the proper divisors

ClassificationDeficientthe aliquot sum is less than the number

Euler's totient φ(n)993,012integers below n that share no factor with it

SquarefreeNohas a repeated prime factor

All divisors1, 2, 997, 1,994, 994,009, 1,988,0186 in total

Arithmetic

Previous number1,988,017

Next number1,988,019

Double3,976,036

Half994,009

Square3,952,215,568,324

Cube7,857,075,689,708,341,832

Square root1,409.970921686≈irrational, shown to 9 decimal places

Cube root125.739994619≈

Negation-1,988,018

Reciprocal5.03013554 × 10^-7≈

Representations

Decimal1,988,018

Binary11110010101011011001021 bits

Octal7452662

Hexadecimal1E55B2

Base 3616LYQ

Roman numeralNot defined above 3,999there is no agreed standard notation

In wordsone million, nine hundred and eighty-eight thousand and eighteen

Ordinalone million, nine hundred and eighty-eight thousand and eighteenth

Scientific notation1.988018 × 10^6

Engineering notation1.988018 × 10^6

Nearest landmarks

Next prime1,988,023+5

Previous prime1,988,011−7

Distance to nearest prime5

Nearest square below1,985,281

Nearest square above1,988,100

Powers & multiples

1,988,018 to the power 23,952,215,568,324

1,988,018 to the power 37,857,075,689,708,341,832

1,988,018 to the power 415,620,007,898,502,598,312,168,976

1,988,018 to the power 531,052,856,862,365,338,491,361,543,329,568

First ten multiples1,988,018, 3,976,036, 5,964,054, 7,952,072, 9,940,090, 11,928,108, 13,916,126, 15,904,144, 17,892,162, 19,880,180

Powers of twoBetween 2^20 (1,048,576) and 2^21 (2,097,152)

Divisibility tests

Divisible by 2Yes

Divisible by 3No, remainder 2

Divisible by 4No, remainder 2

Divisible by 5No, remainder 3

Divisible by 6No, remainder 2

Divisible by 7No, remainder 4

Divisible by 8No, remainder 2

Divisible by 9No, remainder 8

Divisible by 10No, remainder 8

Divisible by 11No, remainder 10

Divisible by 12No, remainder 2

Divisible by 100No, remainder 18

Collatz (3n + 1) trajectory

Steps to reach 165the total stopping time

Highest value reached3,354,7841× the starting value

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

First steps1,988,018 → 994,009 → 2,982,028 → 1,491,014 → 745,507 → 2,236,522 → 1,118,261 → 3,354,784 → 1,677,392 → 838,696 → …

Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage198,801,800%

1,988,018% as a decimal19,880.18

1,988,018% of 1001,988,018

1,988,018% of 1,00019,880,180

As a fraction of 1001,988,018/100

Read another way

As seconds23 days, 13 minutes and 38 seconds

As bytes1.896 MiB

As a 24-bit colour#1E55B2

Keep nerding

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