79818156 has 48 divisors (see below), whose sum is σ = 225751680. Its totient is φ = 24186960.

The previous prime is 79818131. The next prime is 79818157. The reversal of 79818156 is 65181897.

It is not an unprimeable number, because it can be changed into a prime (79818157) 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, 32406 + ... + 34781.

It is an arithmetic number, because the mean of its divisors is an integer number (4703160).

Almost surely, 2^79818156 is an apocalyptic number.

It is an amenable number.

79818156 is an abundant number, since it is smaller than the sum of its proper divisors (145933524).

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

79818156 is a wasteful number, since it uses less digits than its factorization.

79818156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67211 (or 67203 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 79818156 is about 8934.1007381829. The cubic root of 79818156 is about 430.5602144767.

The spelling of 79818156 in words is "seventy-nine million, eight hundred eighteen thousand, one hundred fifty-six".