165158136 has 128 divisors (see below), whose sum is σ = 539078400. Its totient is φ = 46189440.

The previous prime is 165158093. The next prime is 165158143. The reversal of 165158136 is 631851561.

165158136 is a `hidden beast` number, since 1 + 6 + 515 + 8 + 136 = 666.

165158136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 165158136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28215 + ... + 33561.

It is an arithmetic number, because the mean of its divisors is an integer number (4211550).

Almost surely, 2^165158136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165158136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269539200).

165158136 is an abundant number, since it is smaller than the sum of its proper divisors (373920264).

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

165158136 is a wasteful number, since it uses less digits than its factorization.

165158136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386 (or 5376 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 165158136 is about 12851.3865399808. The cubic root of 165158136 is about 548.6558205823.

The spelling of 165158136 in words is "one hundred sixty-five million, one hundred fifty-eight thousand, one hundred thirty-six".