811808795 has 16 divisors (see below), whose sum is σ = 1113800448. Its totient is φ = 556437600.

The previous prime is 811808761. The next prime is 811808813. The reversal of 811808795 is 597808118.

It is not a de Polignac number, because 811808795 - 2⁶ = 811808731 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 160292 + ... + 165278.

It is an arithmetic number, because the mean of its divisors is an integer number (69612528).

Almost surely, 2^811808795 is an apocalyptic number.

811808795 is a deficient number, since it is larger than the sum of its proper divisors (301991653).

811808795 is a wasteful number, since it uses less digits than its factorization.

811808795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9650.

The product of its (nonzero) digits is 161280, while the sum is 47.

The square root of 811808795 is about 28492.2585099883. The cubic root of 811808795 is about 932.8631058900.

The spelling of 811808795 in words is "eight hundred eleven million, eight hundred eight thousand, seven hundred ninety-five".