810132165 has 64 divisors (see below), whose sum is σ = 1528243200. Its totient is φ = 406036800.

The previous prime is 810132163. The next prime is 810132181. The reversal of 810132165 is 561231018.

It is not a de Polignac number, because 810132165 - 2¹ = 810132163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810132163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 334810 + ... + 337220.

It is an arithmetic number, because the mean of its divisors is an integer number (23878800).

Almost surely, 2^810132165 is an apocalyptic number.

It is an amenable number.

810132165 is a deficient number, since it is larger than the sum of its proper divisors (718111035).

810132165 is a wasteful number, since it uses less digits than its factorization.

810132165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575 (or 2569 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 810132165 is about 28462.8207491809. The cubic root of 810132165 is about 932.2204487060.

The spelling of 810132165 in words is "eight hundred ten million, one hundred thirty-two thousand, one hundred sixty-five".