79164538 has 4 divisors (see below), whose sum is σ = 118746810. Its totient is φ = 39582268.

The previous prime is 79164517. The next prime is 79164539. The reversal of 79164538 is 83546197.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74597769 + 4566769 = 8637^2 + 2137^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79164494 and 79164503.

It is not an unprimeable number, because it can be changed into a prime (79164539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19791133 + ... + 19791136.

Almost surely, 2^79164538 is an apocalyptic number.

79164538 is a deficient number, since it is larger than the sum of its proper divisors (39582272).

79164538 is a wasteful number, since it uses less digits than its factorization.

79164538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39582271.

The product of its digits is 181440, while the sum is 43.

The square root of 79164538 is about 8897.4455884821. The cubic root of 79164538 is about 429.3817290830.

The spelling of 79164538 in words is "seventy-nine million, one hundred sixty-four thousand, five hundred thirty-eight".