813934172 has 12 divisors (see below), whose sum is σ = 1424839416. Its totient is φ = 406837200.

The previous prime is 813934153. The next prime is 813934181. The reversal of 813934172 is 271439318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17618 + ... + 44025.

It is an arithmetic number, because the mean of its divisors is an integer number (118736618).

Almost surely, 2^813934172 is an apocalyptic number.

It is an amenable number.

813934172 is a deficient number, since it is larger than the sum of its proper divisors (610905244).

813934172 is a wasteful number, since it uses less digits than its factorization.

813934172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64948 (or 64946 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 813934172 is about 28529.5315769467. The cubic root of 813934172 is about 933.6764985838.

The spelling of 813934172 in words is "eight hundred thirteen million, nine hundred thirty-four thousand, one hundred seventy-two".