198912163 has 2 divisors, whose sum is σ = 198912164. Its totient is φ = 198912162.

The previous prime is 198912157. The next prime is 198912167. The reversal of 198912163 is 361219891.

It is a strong prime.

It is an emirp because it is prime and its reverse (361219891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198912163 is a prime.

It is not a weakly prime, because it can be changed into another prime (198912167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99456081 + 99456082.

It is an arithmetic number, because the mean of its divisors is an integer number (99456082).

Almost surely, 2^198912163 is an apocalyptic number.

198912163 is a deficient number, since it is larger than the sum of its proper divisors (1).

198912163 is an equidigital number, since it uses as much as digits as its factorization.

198912163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 198912163 is about 14103.6223361234. The cubic root of 198912163 is about 583.7413345558.

The spelling of 198912163 in words is "one hundred ninety-eight million, nine hundred twelve thousand, one hundred sixty-three".