318864965 has 4 divisors (see below), whose sum is σ = 382637964. Its totient is φ = 255091968.

The previous prime is 318864943. The next prime is 318865007. The reversal of 318864965 is 569468813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569468813 = 37 ⋅15391049.

It can be written as a sum of positive squares in 2 ways, for example, as 195077089 + 123787876 = 13967^2 + 11126^2 .

It is a cyclic number.

It is not a de Polignac number, because 318864965 - 2⁶ = 318864901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31886492 + ... + 31886501.

It is an arithmetic number, because the mean of its divisors is an integer number (95659491).

Almost surely, 2^318864965 is an apocalyptic number.

It is an amenable number.

318864965 is a deficient number, since it is larger than the sum of its proper divisors (63772999).

318864965 is an equidigital number, since it uses as much as digits as its factorization.

318864965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63772998.

The product of its digits is 1244160, while the sum is 50.

The square root of 318864965 is about 17856.7904450940. The cubic root of 318864965 is about 683.1807195701.

The spelling of 318864965 in words is "three hundred eighteen million, eight hundred sixty-four thousand, nine hundred sixty-five".