813806164 has 12 divisors (see below), whose sum is σ = 1425259584. Its totient is φ = 406589144.

The previous prime is 813806113. The next prime is 813806173. The reversal of 813806164 is 461608318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72604 + ... + 83059.

It is an arithmetic number, because the mean of its divisors is an integer number (118771632).

Almost surely, 2^813806164 is an apocalyptic number.

It is an amenable number.

813806164 is a deficient number, since it is larger than the sum of its proper divisors (611453420).

813806164 is a wasteful number, since it uses less digits than its factorization.

813806164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156974 (or 156972 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 813806164 is about 28527.2880589796. The cubic root of 813806164 is about 933.6275493643.

The spelling of 813806164 in words is "eight hundred thirteen million, eight hundred six thousand, one hundred sixty-four".