813471144 has 32 divisors (see below), whose sum is σ = 2034420000. Its totient is φ = 271058112.

The previous prime is 813471121. The next prime is 813471151. The reversal of 813471144 is 441174318.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94242 + ... + 102510.

It is an arithmetic number, because the mean of its divisors is an integer number (63575625).

Almost surely, 2^813471144 is an apocalyptic number.

It is an amenable number.

813471144 is an abundant number, since it is smaller than the sum of its proper divisors (1220948856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813471144 is a wasteful number, since it uses less digits than its factorization.

813471144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12377 (or 12373 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 813471144 is about 28521.4155328939. The cubic root of 813471144 is about 933.4994161361.

The spelling of 813471144 in words is "eight hundred thirteen million, four hundred seventy-one thousand, one hundred forty-four".