318875438490 has 48 divisors (see below), whose sum is σ = 890248167072. Its totient is φ = 72885814176.

The previous prime is 318875438449. The next prime is 318875438503. The reversal of 318875438490 is 94834578813.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108459564 + ... + 108462503.

It is an arithmetic number, because the mean of its divisors is an integer number (18546836814).

Almost surely, 2^318875438490 is an apocalyptic number.

318875438490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

318875438490 is an abundant number, since it is smaller than the sum of its proper divisors (571372728582).

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

318875438490 is a wasteful number, since it uses less digits than its factorization.

318875438490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216922091 (or 216922084 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 318875438490 in words is "three hundred eighteen billion, eight hundred seventy-five million, four hundred thirty-eight thousand, four hundred ninety".