165316507 has 2 divisors, whose sum is σ = 165316508. Its totient is φ = 165316506.

The previous prime is 165316499. The next prime is 165316513. The reversal of 165316507 is 705613561.

It is a strong prime.

It is an emirp because it is prime and its reverse (705613561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165316507 - 2³ = 165316499 is a prime.

It is not a weakly prime, because it can be changed into another prime (165316577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82658253 + 82658254.

It is an arithmetic number, because the mean of its divisors is an integer number (82658254).

Almost surely, 2^165316507 is an apocalyptic number.

165316507 is a deficient number, since it is larger than the sum of its proper divisors (1).

165316507 is an equidigital number, since it uses as much as digits as its factorization.

165316507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 165316507 is about 12857.5466944515. The cubic root of 165316507 is about 548.8311342027.

The spelling of 165316507 in words is "one hundred sixty-five million, three hundred sixteen thousand, five hundred seven".