163170563 has 2 divisors, whose sum is σ = 163170564. Its totient is φ = 163170562.

The previous prime is 163170541. The next prime is 163170649. The reversal of 163170563 is 365071361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163170563 - 2¹⁸ = 162908419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163170263) 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, 81585281 + 81585282.

It is an arithmetic number, because the mean of its divisors is an integer number (81585282).

Almost surely, 2^163170563 is an apocalyptic number.

163170563 is a deficient number, since it is larger than the sum of its proper divisors (1).

163170563 is an equidigital number, since it uses as much as digits as its factorization.

163170563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 163170563 is about 12773.8233509001. The cubic root of 163170563 is about 546.4460244236.

The spelling of 163170563 in words is "one hundred sixty-three million, one hundred seventy thousand, five hundred sixty-three".