318960865 has 8 divisors (see below), whose sum is σ = 383593320. Its totient is φ = 254608512.

The previous prime is 318960839. The next prime is 318960883. The reversal of 318960865 is 568069813.

It can be written as a sum of positive squares in 4 ways, for example, as 141991056 + 176969809 = 11916^2 + 13303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 318960865 - 2⁵ = 318960833 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 67510 + ... + 72079.

It is an arithmetic number, because the mean of its divisors is an integer number (47949165).

Almost surely, 2^318960865 is an apocalyptic number.

It is an amenable number.

318960865 is a deficient number, since it is larger than the sum of its proper divisors (64632455).

318960865 is a wasteful number, since it uses less digits than its factorization.

318960865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140051.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 318960865 is about 17859.4754962177. The cubic root of 318960865 is about 683.2492025448.

The spelling of 318960865 in words is "three hundred eighteen million, nine hundred sixty thousand, eight hundred sixty-five".