165765916 has 6 divisors (see below), whose sum is σ = 290090360. Its totient is φ = 82882956.

The previous prime is 165765913. The next prime is 165765931. The reversal of 165765916 is 619567561.

165765916 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165765913) 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 as a sum of consecutive naturals, namely, 20720736 + ... + 20720743.

Almost surely, 2^165765916 is an apocalyptic number.

It is an amenable number.

165765916 is a deficient number, since it is larger than the sum of its proper divisors (124324444).

165765916 is a wasteful number, since it uses less digits than its factorization.

165765916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41441483 (or 41441481 counting only the distinct ones).

The product of its digits is 340200, while the sum is 46.

The square root of 165765916 is about 12875.0113009659. The cubic root of 165765916 is about 549.3280123606.

The spelling of 165765916 in words is "one hundred sixty-five million, seven hundred sixty-five thousand, nine hundred sixteen".