79131318 has 32 divisors (see below), whose sum is σ = 181322496. Its totient is φ = 22552608.

The previous prime is 79131317. The next prime is 79131329. The reversal of 79131318 is 81313197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79131317) 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, 16480 + ... + 20732.

It is an arithmetic number, because the mean of its divisors is an integer number (5666328).

Almost surely, 2^79131318 is an apocalyptic number.

79131318 is an abundant number, since it is smaller than the sum of its proper divisors (102191178).

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

79131318 is a wasteful number, since it uses less digits than its factorization.

79131318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708.

The product of its digits is 4536, while the sum is 33.

The square root of 79131318 is about 8895.5785646578. The cubic root of 79131318 is about 429.3216598605.

The spelling of 79131318 in words is "seventy-nine million, one hundred thirty-one thousand, three hundred eighteen".