163505117 has 2 divisors, whose sum is σ = 163505118. Its totient is φ = 163505116.

The previous prime is 163505101. The next prime is 163505141. The reversal of 163505117 is 711505361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 534361 = 12766^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 163505117 - 2⁴ = 163505101 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 163505117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163507117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81752558 + 81752559.

It is an arithmetic number, because the mean of its divisors is an integer number (81752559).

Almost surely, 2^163505117 is an apocalyptic number.

It is an amenable number.

163505117 is a deficient number, since it is larger than the sum of its proper divisors (1).

163505117 is an equidigital number, since it uses as much as digits as its factorization.

163505117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 163505117 is about 12786.9119415127. The cubic root of 163505117 is about 546.8192349212.

The spelling of 163505117 in words is "one hundred sixty-three million, five hundred five thousand, one hundred seventeen".