number.wiki
Number

1,181

1,181 is a prime, odd, a calendar year.

Deficient Number Prime Sexy Prime Squarefree Year

Properties

Parity
Odd
Digit count
4
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
1,182

Primality

1,181 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 1181
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 1,181)
1 × 1181
First multiples
1,181 · 2,362 · 3,543 · 4,724 · 5,905 · 7,086 · 8,267 · 9,448 · 10,629 · 11,810

Representations

In words
one thousand one hundred eighty-one
Ordinal
1181st
Roman numeral
MCLXXXI
Binary
10010011101
Octal
2235
Hexadecimal
49D

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 1,171 (gap of 10)
  • Next prime: 1,187 (gap of 6)

Pair status: sexy with 1187.

Unicode codepoint
ҝ
U+049D
Lowercase letter (Ll)

UTF-8 encoding: D2 9D (2 bytes).

Lookup U+049D on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#00049D
RGB(0, 4, 157)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.157.