165137513 has 8 divisors (see below), whose sum is σ = 173383680. Its totient is φ = 157061520.

The previous prime is 165137503. The next prime is 165137543. The reversal of 165137513 is 315731561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165137513 - 2⁸ = 165137257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165137513.

It is not an unprimeable number, because it can be changed into a prime (165137503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40553 + ... + 44438.

It is an arithmetic number, because the mean of its divisors is an integer number (21672960).

Almost surely, 2^165137513 is an apocalyptic number.

It is an amenable number.

165137513 is a deficient number, since it is larger than the sum of its proper divisors (8246167).

165137513 is an equidigital number, since it uses as much as digits as its factorization.

165137513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85087.

The product of its digits is 9450, while the sum is 32.

The square root of 165137513 is about 12850.5841501466. The cubic root of 165137513 is about 548.6329830759.

The spelling of 165137513 in words is "one hundred sixty-five million, one hundred thirty-seven thousand, five hundred thirteen".