318968884090 has 12 divisors (see below), whose sum is σ = 574147206126. Its totient is φ = 127586839248.

The previous prime is 318968884037. The next prime is 318968884093. The reversal of 318968884090 is 90488869813.

It can be written as a sum of positive squares in 3 ways, for example, as 187664839209 + 131304044881 = 433203^2 + 362359^2 .

It is a super-2 number, since 2×318968884090² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (318968884093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1696672 + ... + 1875268.

Almost surely, 2^318968884090 is an apocalyptic number.

318968884090 is a deficient number, since it is larger than the sum of its proper divisors (255178322036).

318968884090 is an frugal number, since it uses more digits than its factorization.

318968884090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357201 (or 178604 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 64.

The spelling of 318968884090 in words is "three hundred eighteen billion, nine hundred sixty-eight million, eight hundred eighty-four thousand, ninety".