813793836 has 36 divisors (see below), whose sum is σ = 1951599048. Its totient is φ = 263927808.

The previous prime is 813793831. The next prime is 813793847. The reversal of 813793836 is 638397318.

It is not an unprimeable number, because it can be changed into a prime (813793831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8341 + ... + 41196.

Almost surely, 2^813793836 is an apocalyptic number.

It is an amenable number.

813793836 is an abundant number, since it is smaller than the sum of its proper divisors (1137805212).

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

813793836 is a wasteful number, since it uses less digits than its factorization.

813793836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49618 (or 49579 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 813793836 is about 28527.0719843450. The cubic root of 813793836 is about 933.6228349662.

The spelling of 813793836 in words is "eight hundred thirteen million, seven hundred ninety-three thousand, eight hundred thirty-six".