165468689 has 2 divisors, whose sum is σ = 165468690. Its totient is φ = 165468688.

The previous prime is 165468683. The next prime is 165468713. The reversal of 165468689 is 986864561.

165468689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141800464 + 23668225 = 11908^2 + 4865^2 .

It is a cyclic number.

It is not a de Polignac number, because 165468689 - 2⁴ = 165468673 is a prime.

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 165468689.

It is not a weakly prime, because it can be changed into another prime (165468683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82734344 + 82734345.

It is an arithmetic number, because the mean of its divisors is an integer number (82734345).

Almost surely, 2^165468689 is an apocalyptic number.

It is an amenable number.

165468689 is a deficient number, since it is larger than the sum of its proper divisors (1).

165468689 is an equidigital number, since it uses as much as digits as its factorization.

165468689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The square root of 165468689 is about 12863.4633361315. The cubic root of 165468689 is about 548.9994912642. Note that the first 3 decimals are identical.

The spelling of 165468689 in words is "one hundred sixty-five million, four hundred sixty-eight thousand, six hundred eighty-nine".