811797873 has 16 divisors (see below), whose sum is σ = 1103803200. Its totient is φ = 530513984.

The previous prime is 811797869. The next prime is 811797911. The reversal of 811797873 is 378797118.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 811797873 - 2² = 811797869 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (811797773) by changing a digit.

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, 317203 + ... + 319751.

It is an arithmetic number, because the mean of its divisors is an integer number (68987700).

Almost surely, 2^811797873 is an apocalyptic number.

It is an amenable number.

811797873 is a deficient number, since it is larger than the sum of its proper divisors (292005327).

811797873 is a wasteful number, since it uses less digits than its factorization.

811797873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608.

The product of its digits is 592704, while the sum is 51.

The square root of 811797873 is about 28492.0668432460. The cubic root of 811797873 is about 932.8589223201.

The spelling of 811797873 in words is "eight hundred eleven million, seven hundred ninety-seven thousand, eight hundred seventy-three".