165163389 has 16 divisors (see below), whose sum is σ = 222265344. Its totient is φ = 109090800.

The previous prime is 165163351. The next prime is 165163393. The reversal of 165163389 is 983361561.

It is a happy number.

It is not a de Polignac number, because 165163389 - 2¹⁶ = 165097853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165163389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165163289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180844 + ... + 181754.

It is an arithmetic number, because the mean of its divisors is an integer number (13891584).

Almost surely, 2^165163389 is an apocalyptic number.

It is an amenable number.

165163389 is a deficient number, since it is larger than the sum of its proper divisors (57101955).

165163389 is a wasteful number, since it uses less digits than its factorization.

165163389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its digits is 116640, while the sum is 42.

The square root of 165163389 is about 12851.5909131905. The cubic root of 165163389 is about 548.6616373479.

The spelling of 165163389 in words is "one hundred sixty-five million, one hundred sixty-three thousand, three hundred eighty-nine".