318399916 has 6 divisors (see below), whose sum is σ = 557199860. Its totient is φ = 159199956.

The previous prime is 318399901. The next prime is 318399923. The reversal of 318399916 is 619993813.

It is a self number, because there is not a number n which added to its sum of digits gives 318399916.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39799986 + ... + 39799993.

Almost surely, 2^318399916 is an apocalyptic number.

It is an amenable number.

318399916 is a deficient number, since it is larger than the sum of its proper divisors (238799944).

318399916 is a wasteful number, since it uses less digits than its factorization.

318399916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79599983 (or 79599981 counting only the distinct ones).

The product of its digits is 314928, while the sum is 49.

The square root of 318399916 is about 17843.7640647931. The cubic root of 318399916 is about 682.8484293881.

The spelling of 318399916 in words is "three hundred eighteen million, three hundred ninety-nine thousand, nine hundred sixteen".