318929138 has 24 divisors (see below), whose sum is σ = 527446080. Its totient is φ = 144524600.

The previous prime is 318929137. The next prime is 318929183. The reversal of 318929138 is 831929813.

318929138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (318929137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85043 + ... + 88713.

It is an arithmetic number, because the mean of its divisors is an integer number (21976920).

Almost surely, 2^318929138 is an apocalyptic number.

318929138 is a deficient number, since it is larger than the sum of its proper divisors (208516942).

318929138 is a wasteful number, since it uses less digits than its factorization.

318929138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054 (or 4043 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 318929138 is about 17858.5872341571. The cubic root of 318929138 is about 683.2265475541.

The spelling of 318929138 in words is "three hundred eighteen million, nine hundred twenty-nine thousand, one hundred thirty-eight".