811896983 has 16 divisors (see below), whose sum is σ = 842572800. Its totient is φ = 781915680.

The previous prime is 811896979. The next prime is 811897001. The reversal of 811896983 is 389698118.

It is a cyclic number.

It is not a de Polignac number, because 811896983 - 2² = 811896979 is a prime.

It is a super-2 number, since 2×811896983² = 1318353422009004578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811890983) 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, 882998 + ... + 883916.

It is an arithmetic number, because the mean of its divisors is an integer number (52660800).

Almost surely, 2^811896983 is an apocalyptic number.

811896983 is a deficient number, since it is larger than the sum of its proper divisors (30675817).

811896983 is a wasteful number, since it uses less digits than its factorization.

811896983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262.

The product of its digits is 746496, while the sum is 53.

The square root of 811896983 is about 28493.8060462270. The cubic root of 811896983 is about 932.8968841037.

The spelling of 811896983 in words is "eight hundred eleven million, eight hundred ninety-six thousand, nine hundred eighty-three".