165804315 has 16 divisors (see below), whose sum is σ = 280892448. Its totient is φ = 83227136.

The previous prime is 165804293. The next prime is 165804329. The reversal of 165804315 is 513408561.

It is a cyclic number.

It is not a de Polignac number, because 165804315 - 2⁷ = 165804187 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324852 + ... + 325361.

It is an arithmetic number, because the mean of its divisors is an integer number (17555778).

Almost surely, 2^165804315 is an apocalyptic number.

165804315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165804315 is a deficient number, since it is larger than the sum of its proper divisors (115088133).

165804315 is a wasteful number, since it uses less digits than its factorization.

165804315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650238.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 165804315 is about 12876.5024366091. The cubic root of 165804315 is about 549.3704256188.

The spelling of 165804315 in words is "one hundred sixty-five million, eight hundred four thousand, three hundred fifteen".