165950507 has 2 divisors, whose sum is σ = 165950508. Its totient is φ = 165950506.

The previous prime is 165950489. The next prime is 165950531. The reversal of 165950507 is 705059561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165950507 - 2⁸ = 165950251 is a prime.

It is a Chen prime.

It is equal to p_9289028 and since 165950507 and 9289028 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (165950537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82975253 + 82975254.

It is an arithmetic number, because the mean of its divisors is an integer number (82975254).

Almost surely, 2^165950507 is an apocalyptic number.

165950507 is a deficient number, since it is larger than the sum of its proper divisors (1).

165950507 is an equidigital number, since it uses as much as digits as its factorization.

165950507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 165950507 is about 12882.1778826408. The cubic root of 165950507 is about 549.5318407350.

The spelling of 165950507 in words is "one hundred sixty-five million, nine hundred fifty thousand, five hundred seven".