813630793 has 4 divisors (see below), whose sum is σ = 813812608. Its totient is φ = 813448980.

The previous prime is 813630751. The next prime is 813630809. The reversal of 813630793 is 397036318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813630793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813630193) 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, 84021 + ... + 93202.

It is an arithmetic number, because the mean of its divisors is an integer number (203453152).

Almost surely, 2^813630793 is an apocalyptic number.

It is an amenable number.

813630793 is a deficient number, since it is larger than the sum of its proper divisors (181815).

813630793 is a wasteful number, since it uses less digits than its factorization.

813630793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181814.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 813630793 is about 28524.2141521901. The cubic root of 813630793 is about 933.5604805844.

The spelling of 813630793 in words is "eight hundred thirteen million, six hundred thirty thousand, seven hundred ninety-three".