163898017 has 2 divisors, whose sum is σ = 163898018. Its totient is φ = 163898016.

The previous prime is 163897997. The next prime is 163898057. The reversal of 163898017 is 710898361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159365376 + 4532641 = 12624^2 + 2129^2 .

It is an emirp because it is prime and its reverse (710898361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163898017 - 2²⁷ = 29680289 is a prime.

It is not a weakly prime, because it can be changed into another prime (163898057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81949008 + 81949009.

It is an arithmetic number, because the mean of its divisors is an integer number (81949009).

Almost surely, 2^163898017 is an apocalyptic number.

It is an amenable number.

163898017 is a deficient number, since it is larger than the sum of its proper divisors (1).

163898017 is an equidigital number, since it uses as much as digits as its factorization.

163898017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 163898017 is about 12802.2660884704. The cubic root of 163898017 is about 547.2568836441.

The spelling of 163898017 in words is "one hundred sixty-three million, eight hundred ninety-eight thousand, seventeen".