79613538 has 16 divisors (see below), whose sum is σ = 161926560. Its totient is φ = 26087936.

The previous prime is 79613503. The next prime is 79613539. The reversal of 79613538 is 83531697.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79613538.

It is not an unprimeable number, because it can be changed into a prime (79613539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112095 + ... + 112802.

It is an arithmetic number, because the mean of its divisors is an integer number (10120410).

Almost surely, 2^79613538 is an apocalyptic number.

79613538 is an abundant number, since it is smaller than the sum of its proper divisors (82313022).

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

79613538 is a wasteful number, since it uses less digits than its factorization.

79613538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224961.

The product of its digits is 136080, while the sum is 42.

The square root of 79613538 is about 8922.6418733467. The cubic root of 79613538 is about 430.1919784551.

The spelling of 79613538 in words is "seventy-nine million, six hundred thirteen thousand, five hundred thirty-eight".