813491367 has 16 divisors (see below), whose sum is σ = 1205772288. Its totient is φ = 484460640.

The previous prime is 813491359. The next prime is 813491387. The reversal of 813491367 is 763194318.

It is not a de Polignac number, because 813491367 - 2³ = 813491359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813491387) 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, 335223 + ... + 337640.

It is an arithmetic number, because the mean of its divisors is an integer number (75360768).

Almost surely, 2^813491367 is an apocalyptic number.

813491367 is a deficient number, since it is larger than the sum of its proper divisors (392280921).

813491367 is a wasteful number, since it uses less digits than its factorization.

813491367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672910.

The product of its digits is 108864, while the sum is 42.

The square root of 813491367 is about 28521.7700537677. The cubic root of 813491367 is about 933.5071517116.

The spelling of 813491367 in words is "eight hundred thirteen million, four hundred ninety-one thousand, three hundred sixty-seven".