Number
1,081
1,081 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 10
- Digital root
- 1
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,152
Primality
Prime factorization: 23 × 47
Divisors & multiples
Aliquot sum (sum of proper divisors):
71
First multiples
Representations
- In words
- one thousand eighty-one
- Ordinal
- 1081st
- Roman numeral
- MLXXXI
- Binary
- 10000111001
- Octal
- 2071
- Hexadecimal
- 439
Also seen as
Unicode codepoint
й
U+0439
Lowercase letter (Ll)
UTF-8 encoding: D0 B9 (2 bytes).
Hex color
#000439
RGB(0, 4, 57)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.57.