165137536 has 32 divisors (see below), whose sum is σ = 329607900. Its totient is φ = 82412544.

The previous prime is 165137503. The next prime is 165137543. The reversal of 165137536 is 635731561.

It can be written as a sum of positive squares in 2 ways, for example, as 155151936 + 9985600 = 12456^2 + 3160^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 165137495 and 165137504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98110 + ... + 99778.

Almost surely, 2^165137536 is an apocalyptic number.

165137536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165137536 is a deficient number, since it is larger than the sum of its proper divisors (164470364).

165137536 is an equidigital number, since it uses as much as digits as its factorization.

165137536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456 (or 2444 counting only the distinct ones).

The product of its digits is 56700, while the sum is 37.

The square root of 165137536 is about 12850.5850450476. The cubic root of 165137536 is about 548.6330085467.

The spelling of 165137536 in words is "one hundred sixty-five million, one hundred thirty-seven thousand, five hundred thirty-six".