1318956965 has 16 divisors (see below), whose sum is σ = 1654224768. Its totient is φ = 1007662656.

The previous prime is 1318956937. The next prime is 1318956967. The reversal of 1318956965 is 5696598131.

It is a cyclic number.

It is not a de Polignac number, because 1318956965 - 2²⁸ = 1050521509 is a prime.

It is a super-2 number, since 2×1318956965² = 3479294951044022450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318956967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65027 + ... + 82863.

It is an arithmetic number, because the mean of its divisors is an integer number (103389048).

Almost surely, 2^1318956965 is an apocalyptic number.

It is an amenable number.

1318956965 is a deficient number, since it is larger than the sum of its proper divisors (335267803).

1318956965 is a wasteful number, since it uses less digits than its factorization.

1318956965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18508.

The product of its digits is 1749600, while the sum is 53.

The square root of 1318956965 is about 36317.4471156771. The cubic root of 1318956965 is about 1096.6723027748.

The spelling of 1318956965 in words is "one billion, three hundred eighteen million, nine hundred fifty-six thousand, nine hundred sixty-five".