165960515 has 16 divisors (see below), whose sum is σ = 234946560. Its totient is φ = 110129760.

The previous prime is 165960499. The next prime is 165960523. The reversal of 165960515 is 515069561.

It is a happy number.

165960515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165960515 - 2⁴ = 165960499 is a prime.

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, 75395 + ... + 77564.

It is an arithmetic number, because the mean of its divisors is an integer number (14684160).

Almost surely, 2^165960515 is an apocalyptic number.

165960515 is a deficient number, since it is larger than the sum of its proper divisors (68986045).

165960515 is a wasteful number, since it uses less digits than its factorization.

165960515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153002.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 165960515 is about 12882.5663204192. The cubic root of 165960515 is about 549.5428874103.

The spelling of 165960515 in words is "one hundred sixty-five million, nine hundred sixty thousand, five hundred fifteen".