813405692 has 24 divisors (see below), whose sum is σ = 1553693232. Its totient is φ = 369532800.

The previous prime is 813405667. The next prime is 813405709. The reversal of 813405692 is 296504318.

It is a happy number.

It is a congruent number.

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, 107258 + ... + 114590.

It is an arithmetic number, because the mean of its divisors is an integer number (64737218).

Almost surely, 2^813405692 is an apocalyptic number.

It is an amenable number.

813405692 is a deficient number, since it is larger than the sum of its proper divisors (740287540).

813405692 is a wasteful number, since it uses less digits than its factorization.

813405692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9869 (or 9867 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 813405692 is about 28520.2680913066. The cubic root of 813405692 is about 933.4743789675.

The spelling of 813405692 in words is "eight hundred thirteen million, four hundred five thousand, six hundred ninety-two".