Number
1,091
1,091 is a prime, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 11
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 2
- σ(n) — sum of divisors
- 1,092
Primality
1,091 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
Representations
- In words
- one thousand ninety-one
- Ordinal
- 1091st
- Roman numeral
- MXCI
- Binary
- 10001000011
- Octal
- 2103
- Hexadecimal
- 443
Also seen as
Prime neighborhood
Unicode codepoint
у
U+0443
Lowercase letter (Ll)
UTF-8 encoding: D1 83 (2 bytes).
Hex color
#000443
RGB(0, 4, 67)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.67.