165168733 has 2 divisors, whose sum is σ = 165168734. Its totient is φ = 165168732.

The previous prime is 165168721. The next prime is 165168739. The reversal of 165168733 is 337861561.

It is a happy number.

165168733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164531929 + 636804 = 12827^2 + 798^2 .

It is a cyclic number.

It is not a de Polignac number, because 165168733 - 2⁵ = 165168701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165168739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82584366 + 82584367.

It is an arithmetic number, because the mean of its divisors is an integer number (82584367).

Almost surely, 2^165168733 is an apocalyptic number.

It is an amenable number.

165168733 is a deficient number, since it is larger than the sum of its proper divisors (1).

165168733 is an equidigital number, since it uses as much as digits as its factorization.

165168733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 165168733 is about 12851.7988235110. The cubic root of 165168733 is about 548.6675547533.

The spelling of 165168733 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, seven hundred thirty-three".