Number
1,964
1,964 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 20
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 6
- σ(n) — sum of divisors
- 3,444
Primality
Prime factorization: 2 2 × 491
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,480
First multiples
Representations
- In words
- one thousand nine hundred sixty-four
- Ordinal
- 1964th
- Roman numeral
- MCMLXIV
- Binary
- 11110101100
- Octal
- 3654
- Hexadecimal
- 7AC
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1964, here are decompositions:
- 13 + 1951 = 1964
- 31 + 1933 = 1964
- 97 + 1867 = 1964
- 103 + 1861 = 1964
- 163 + 1801 = 1964
- 181 + 1783 = 1964
- 211 + 1753 = 1964
- 223 + 1741 = 1964
Showing the first eight; more decompositions exist.
Unicode codepoint
ެ
U+07AC
Non-spacing mark (Mn)
UTF-8 encoding: DE AC (2 bytes).
Hex color
#0007AC
RGB(0, 7, 172)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.172.