165137913 has 8 divisors (see below), whose sum is σ = 244648800. Its totient is φ = 110091924.

The previous prime is 165137897. The next prime is 165137923. The reversal of 165137913 is 319731561.

It is not a de Polignac number, because 165137913 - 2⁴ = 165137897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165137923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058083 + ... + 3058136.

It is an arithmetic number, because the mean of its divisors is an integer number (30581100).

Almost surely, 2^165137913 is an apocalyptic number.

It is an amenable number.

165137913 is a deficient number, since it is larger than the sum of its proper divisors (79510887).

165137913 is an equidigital number, since it uses as much as digits as its factorization.

165137913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116228 (or 6116222 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 165137913 is about 12850.5997136320. The cubic root of 165137913 is about 548.6334260462.

The spelling of 165137913 in words is "one hundred sixty-five million, one hundred thirty-seven thousand, nine hundred thirteen".