165613136 has 20 divisors (see below), whose sum is σ = 345558612. Its totient is φ = 76436736.

The previous prime is 165613117. The next prime is 165613141. The reversal of 165613136 is 631316561.

165613136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30030400 + 135582736 = 5480^2 + 11644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397901 + ... + 398316.

Almost surely, 2^165613136 is an apocalyptic number.

165613136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165613136 is an abundant number, since it is smaller than the sum of its proper divisors (179945476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165613136 is a wasteful number, since it uses less digits than its factorization.

165613136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796238 (or 796232 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 165613136 is about 12869.0767345603. The cubic root of 165613136 is about 549.1591957288.

Adding to 165613136 its reverse (631316561), we get a palindrome (796929697).

The spelling of 165613136 in words is "one hundred sixty-five million, six hundred thirteen thousand, one hundred thirty-six".