79163381 has 16 divisors (see below), whose sum is σ = 88216128. Its totient is φ = 70435200.

The previous prime is 79163377. The next prime is 79163423. The reversal of 79163381 is 18336197.

It is not a de Polignac number, because 79163381 - 2² = 79163377 is a prime.

It is a super-2 number, since 2×79163381² = 12533681782702322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79163341) 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, 171491 + ... + 171951.

It is an arithmetic number, because the mean of its divisors is an integer number (5513508).

Almost surely, 2^79163381 is an apocalyptic number.

It is an amenable number.

79163381 is a deficient number, since it is larger than the sum of its proper divisors (9052747).

79163381 is a wasteful number, since it uses less digits than its factorization.

79163381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its digits is 27216, while the sum is 38.

The square root of 79163381 is about 8897.3805695834. The cubic root of 79163381 is about 429.3796372495.

The spelling of 79163381 in words is "seventy-nine million, one hundred sixty-three thousand, three hundred eighty-one".