813995732 has 12 divisors (see below), whose sum is σ = 1553991936. Its totient is φ = 369998040.

The previous prime is 813995731. The next prime is 813995747. The reversal of 813995732 is 237599318.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813995731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9249908 + ... + 9249995.

It is an arithmetic number, because the mean of its divisors is an integer number (129499328).

Almost surely, 2^813995732 is an apocalyptic number.

It is an amenable number.

813995732 is a deficient number, since it is larger than the sum of its proper divisors (739996204).

813995732 is a wasteful number, since it uses less digits than its factorization.

813995732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18499918 (or 18499916 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The square root of 813995732 is about 28530.6104386149. The cubic root of 813995732 is about 933.7000368003.

The spelling of 813995732 in words is "eight hundred thirteen million, nine hundred ninety-five thousand, seven hundred thirty-two".