165928769 has 2 divisors, whose sum is σ = 165928770. Its totient is φ = 165928768.

The previous prime is 165928717. The next prime is 165928793. The reversal of 165928769 is 967829561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146700544 + 19228225 = 12112^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 165928769 - 2²⁰ = 164880193 is a prime.

It is a super-2 number, since 2×165928769² = 55064712763710722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165928769.

It is not a weakly prime, because it can be changed into another prime (165928799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82964384 + 82964385.

It is an arithmetic number, because the mean of its divisors is an integer number (82964385).

Almost surely, 2^165928769 is an apocalyptic number.

It is an amenable number.

165928769 is a deficient number, since it is larger than the sum of its proper divisors (1).

165928769 is an equidigital number, since it uses as much as digits as its factorization.

165928769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 165928769 is about 12881.3341312148. The cubic root of 165928769 is about 549.5078451373.

The spelling of 165928769 in words is "one hundred sixty-five million, nine hundred twenty-eight thousand, seven hundred sixty-nine".