918661264 has 20 divisors (see below), whose sum is σ = 1801353456. Its totient is φ = 453795872.

The previous prime is 918661213. The next prime is 918661297. The reversal of 918661264 is 462166819.

It is a self number, because there is not a number n which added to its sum of digits gives 918661264.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344554 + ... + 347209.

Almost surely, 2^918661264 is an apocalyptic number.

It is an amenable number.

918661264 is a deficient number, since it is larger than the sum of its proper divisors (882692192).

918661264 is a wasteful number, since it uses less digits than its factorization.

918661264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691854 (or 691848 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 918661264 is about 30309.4253327245. The cubic root of 918661264 is about 972.1168437046.

The spelling of 918661264 in words is "nine hundred eighteen million, six hundred sixty-one thousand, two hundred sixty-four".