318642465 has 16 divisors (see below), whose sum is σ = 513207936. Its totient is φ = 168816000.

The previous prime is 318642461. The next prime is 318642487. The reversal of 318642465 is 564246813.

It is not a de Polignac number, because 318642465 - 2² = 318642461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318642461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68076 + ... + 72605.

It is an arithmetic number, because the mean of its divisors is an integer number (32075496).

Almost surely, 2^318642465 is an apocalyptic number.

It is an amenable number.

318642465 is a deficient number, since it is larger than the sum of its proper divisors (194565471).

318642465 is a wasteful number, since it uses less digits than its factorization.

318642465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140840.

The product of its digits is 138240, while the sum is 39.

The square root of 318642465 is about 17850.5592349372. The cubic root of 318642465 is about 683.0217775969.

The spelling of 318642465 in words is "three hundred eighteen million, six hundred forty-two thousand, four hundred sixty-five".