165135366 has 48 divisors (see below), whose sum is σ = 400886928. Its totient is φ = 48686400.

The previous prime is 165135361. The next prime is 165135401. The reversal of 165135366 is 663531561.

165135366 is a `hidden beast` number, since 165 + 135 + 366 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 165135366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165135361) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3945 + ... + 18596.

It is an arithmetic number, because the mean of its divisors is an integer number (8351811).

Almost surely, 2^165135366 is an apocalyptic number.

165135366 is an abundant number, since it is smaller than the sum of its proper divisors (235751562).

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

165135366 is a wasteful number, since it uses less digits than its factorization.

165135366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22597 (or 22594 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 165135366 is about 12850.5006128166. The cubic root of 165135366 is about 548.6306054209.

It can be divided in two parts, 165 and 135366, that added together give a palindrome (135531).

The spelling of 165135366 in words is "one hundred sixty-five million, one hundred thirty-five thousand, three hundred sixty-six".