165392765 has 16 divisors (see below), whose sum is σ = 204691968. Its totient is φ = 128222976.

The previous prime is 165392761. The next prime is 165392791. The reversal of 165392765 is 567293561.

It is a cyclic number.

It is not a de Polignac number, because 165392765 - 2² = 165392761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165392761) 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, 20789 + ... + 27621.

It is an arithmetic number, because the mean of its divisors is an integer number (12793248).

Almost surely, 2^165392765 is an apocalyptic number.

It is an amenable number.

165392765 is a deficient number, since it is larger than the sum of its proper divisors (39299203).

165392765 is a wasteful number, since it uses less digits than its factorization.

165392765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6988.

The product of its digits is 340200, while the sum is 44.

The square root of 165392765 is about 12860.5118482897. The cubic root of 165392765 is about 548.9155103926.

The spelling of 165392765 in words is "one hundred sixty-five million, three hundred ninety-two thousand, seven hundred sixty-five".