809610164 has 24 divisors (see below), whose sum is σ = 1546600608. Its totient is φ = 367771040.

The previous prime is 809610163. The next prime is 809610169. The reversal of 809610164 is 461016908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809610163) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 77687 + ... + 87489.

It is an arithmetic number, because the mean of its divisors is an integer number (64441692).

Almost surely, 2^809610164 is an apocalyptic number.

It is an amenable number.

809610164 is a deficient number, since it is larger than the sum of its proper divisors (736990444).

809610164 is a wasteful number, since it uses less digits than its factorization.

809610164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11695 (or 11693 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 809610164 is about 28453.6493968700. The cubic root of 809610164 is about 932.0201832097.

The spelling of 809610164 in words is "eight hundred nine million, six hundred ten thousand, one hundred sixty-four".