318640368 has 20 divisors (see below), whose sum is σ = 823154408. Its totient is φ = 106213440.

The previous prime is 318640349. The next prime is 318640369. The reversal of 318640368 is 863046813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318640369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3319123 + ... + 3319218.

Almost surely, 2^318640368 is an apocalyptic number.

It is an amenable number.

318640368 is an abundant number, since it is smaller than the sum of its proper divisors (504514040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318640368 is a wasteful number, since it uses less digits than its factorization.

318640368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638352 (or 6638346 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 318640368 is about 17850.5004971849. The cubic root of 318640368 is about 683.0202792616.

The spelling of 318640368 in words is "three hundred eighteen million, six hundred forty thousand, three hundred sixty-eight".