813949692 has 12 divisors (see below), whose sum is σ = 1899215976. Its totient is φ = 271316560.

The previous prime is 813949679. The next prime is 813949723. The reversal of 813949692 is 296949318.

813949692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×813949692² = 1325028202213789728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33914559 + ... + 33914582.

It is an arithmetic number, because the mean of its divisors is an integer number (158267998).

Almost surely, 2^813949692 is an apocalyptic number.

It is an amenable number.

813949692 is an abundant number, since it is smaller than the sum of its proper divisors (1085266284).

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

813949692 is a wasteful number, since it uses less digits than its factorization.

813949692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67829148 (or 67829146 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 813949692 is about 28529.8035745078. The cubic root of 813949692 is about 933.6824329569.

The spelling of 813949692 in words is "eight hundred thirteen million, nine hundred forty-nine thousand, six hundred ninety-two".