811363874 has 4 divisors (see below), whose sum is σ = 1217045814. Its totient is φ = 405681936.

The previous prime is 811363871. The next prime is 811363919. The reversal of 811363874 is 478363118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478363118 = 2 ⋅239181559.

It can be written as a sum of positive squares in only one way, i.e., 748843225 + 62520649 = 27365^2 + 7907^2 .

It is a super-2 number, since 2×811363874² = 1316622672064575752, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (811363871) 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 as a sum of consecutive naturals, namely, 202840967 + ... + 202840970.

Almost surely, 2^811363874 is an apocalyptic number.

811363874 is a deficient number, since it is larger than the sum of its proper divisors (405681940).

811363874 is a wasteful number, since it uses less digits than its factorization.

811363874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405681939.

The product of its digits is 96768, while the sum is 41.

The square root of 811363874 is about 28484.4496875049. The cubic root of 811363874 is about 932.6926526848.

The spelling of 811363874 in words is "eight hundred eleven million, three hundred sixty-three thousand, eight hundred seventy-four".