811130865 has 16 divisors (see below), whose sum is σ = 1298673216. Its totient is φ = 432315200.

The previous prime is 811130851. The next prime is 811130897. The reversal of 811130865 is 568031118.

It is not a de Polignac number, because 811130865 - 2⁴ = 811130849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6355 + ... + 40775.

It is an arithmetic number, because the mean of its divisors is an integer number (81167076).

Almost surely, 2^811130865 is an apocalyptic number.

It is an amenable number.

811130865 is a deficient number, since it is larger than the sum of its proper divisors (487542351).

811130865 is a wasteful number, since it uses less digits than its factorization.

811130865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36000.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 811130865 is about 28480.3592849528. The cubic root of 811130865 is about 932.6033599944.

The spelling of 811130865 in words is "eight hundred eleven million, one hundred thirty thousand, eight hundred sixty-five".