811863032 has 8 divisors (see below), whose sum is σ = 1522243200. Its totient is φ = 405931512.

The previous prime is 811863001. The next prime is 811863113. The reversal of 811863032 is 230368118.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 811863032.

It is a congruent 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 as a sum of consecutive naturals, namely, 50741432 + ... + 50741447.

It is an arithmetic number, because the mean of its divisors is an integer number (190280400).

Almost surely, 2^811863032 is an apocalyptic number.

It is an amenable number.

811863032 is a deficient number, since it is larger than the sum of its proper divisors (710380168).

811863032 is a wasteful number, since it uses less digits than its factorization.

811863032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101482885 (or 101482881 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 811863032 is about 28493.2102789419. The cubic root of 811863032 is about 932.8838803096.

The spelling of 811863032 in words is "eight hundred eleven million, eight hundred sixty-three thousand, thirty-two".