Recognised as Decimal number

1.564

Positive
Decimal
3 d.p.
Exact fraction
4 s.f.

1.564 is a decimal number equal to 391⁄250. It lies between 1 and 2, and as a percentage it is 156.4%.

Number properties

Absolute value1.564

SignPositive

Integer part1

Fractional part0.564

Decimal places3

Floor1

Ceiling2

Rounded to nearest2

Truncated1

Fractions & ratios

As a fraction391/250exact

Ratio391 : 250

As a percentage156.4%

Reciprocal0.6393861893≈

Arithmetic

Double3.128

Half0.782

Square2.446096

Cube3.825694

Square root1.2505998561≈

Cube root1.1607684167≈

Negation-1.564

Natural logarithm0.4472466421≈

Logarithm base 100.1942367487≈

Representations

Decimal1.564

Scientific notation1.564 × 10^0

Exponential1.564e+0

IEEE 754 binary64 (hex)0x3FF90624DD2F1AA0the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x3FC8312732-bit single precision, may lose accuracy

Stored as1.564the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written4counted from the digits as typed, not from the value

To 0 decimal places2

To 1 decimal place1.6

To 2 decimal places1.56

To 3 decimal places1.564

To 4 decimal places1.5640

To 1 significant figure2

To 2 significant figures1.6

To 3 significant figures1.56

To 4 significant figures1.564

Keep nerding

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