79018138 has 8 divisors (see below), whose sum is σ = 118565280. Its totient is φ = 39496380.

The previous prime is 79018123. The next prime is 79018141. The reversal of 79018138 is 83181097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×79018138² = 12487732265974088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79018097 and 79018106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7353 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (14820660).

Almost surely, 2^79018138 is an apocalyptic number.

79018138 is a deficient number, since it is larger than the sum of its proper divisors (39547142).

79018138 is a wasteful number, since it uses less digits than its factorization.

79018138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12692.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 79018138 is about 8889.2147009733. The cubic root of 79018138 is about 429.1168786976.

The spelling of 79018138 in words is "seventy-nine million, eighteen thousand, one hundred thirty-eight".