163616317 has 2 divisors, whose sum is σ = 163616318. Its totient is φ = 163616316.

The previous prime is 163616309. The next prime is 163616339. The reversal of 163616317 is 713616361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134304921 + 29311396 = 11589^2 + 5414^2 .

It is a cyclic number.

It is not a de Polignac number, because 163616317 - 2³ = 163616309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163616017) 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, 81808158 + 81808159.

It is an arithmetic number, because the mean of its divisors is an integer number (81808159).

Almost surely, 2^163616317 is an apocalyptic number.

It is an amenable number.

163616317 is a deficient number, since it is larger than the sum of its proper divisors (1).

163616317 is an equidigital number, since it uses as much as digits as its factorization.

163616317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 163616317 is about 12791.2593985112. The cubic root of 163616317 is about 546.9431709390.

The spelling of 163616317 in words is "one hundred sixty-three million, six hundred sixteen thousand, three hundred seventeen".