165139159 has 2 divisors, whose sum is σ = 165139160. Its totient is φ = 165139158.

The previous prime is 165139133. The next prime is 165139181. The reversal of 165139159 is 951931561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165139159 - 2¹⁷ = 165008087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165139109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82569579 + 82569580.

It is an arithmetic number, because the mean of its divisors is an integer number (82569580).

Almost surely, 2^165139159 is an apocalyptic number.

165139159 is a deficient number, since it is larger than the sum of its proper divisors (1).

165139159 is an equidigital number, since it uses as much as digits as its factorization.

165139159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 40.

The square root of 165139159 is about 12850.6481937683. The cubic root of 165139159 is about 548.6348058939.

The spelling of 165139159 in words is "one hundred sixty-five million, one hundred thirty-nine thousand, one hundred fifty-nine".