165144659 has 2 divisors, whose sum is σ = 165144660. Its totient is φ = 165144658.

The previous prime is 165144643. The next prime is 165144671. The reversal of 165144659 is 956441561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165144659 - 2⁴ = 165144643 is a prime.

It is not a weakly prime, because it can be changed into another prime (165144359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82572329 + 82572330.

It is an arithmetic number, because the mean of its divisors is an integer number (82572330).

Almost surely, 2^165144659 is an apocalyptic number.

165144659 is a deficient number, since it is larger than the sum of its proper divisors (1).

165144659 is an equidigital number, since it uses as much as digits as its factorization.

165144659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The square root of 165144659 is about 12850.8621889739. The cubic root of 165144659 is about 548.6408966317.

The spelling of 165144659 in words is "one hundred sixty-five million, one hundred forty-four thousand, six hundred fifty-nine".