79318161 has 48 divisors (see below), whose sum is σ = 129489360. Its totient is φ = 46448640.

The previous prime is 79318123. The next prime is 79318163. The reversal of 79318161 is 16181397.

It can be written as a sum of positive squares in 8 ways, for example, as 463761 + 78854400 = 681^2 + 8880^2 .

It is not a de Polignac number, because 79318161 - 2⁶ = 79318097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79318163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 329001 + ... + 329241.

It is an arithmetic number, because the mean of its divisors is an integer number (2697695).

Almost surely, 2^79318161 is an apocalyptic number.

It is an amenable number.

79318161 is a deficient number, since it is larger than the sum of its proper divisors (50171199).

79318161 is a wasteful number, since it uses less digits than its factorization.

79318161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 383 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 79318161 is about 8906.0743877423. The cubic root of 79318161 is about 429.6592956500.

The spelling of 79318161 in words is "seventy-nine million, three hundred eighteen thousand, one hundred sixty-one".