318904160656 has 15 divisors (see below), whose sum is σ = 617881187851. Its totient is φ = 159450950896.

The previous prime is 318904160651. The next prime is 318904160669. The reversal of 318904160656 is 656061409813.

The square root of 318904160656 is 564716.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318904160651) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 2188275 + ... + 2329453.

Almost surely, 2^318904160656 is an apocalyptic number.

318904160656 is the 564716-th square number.

It is an amenable number.

318904160656 is a deficient number, since it is larger than the sum of its proper divisors (298977027195).

318904160656 is an frugal number, since it uses more digits than its factorization.

318904160656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282366 (or 141181 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 318904160656 by its sum of digits (49), we get a square (15626303872144 = 3953012²).

The spelling of 318904160656 in words is "three hundred eighteen billion, nine hundred four million, one hundred sixty thousand, six hundred fifty-six".