198393163 has 2 divisors, whose sum is σ = 198393164. Its totient is φ = 198393162.

The previous prime is 198393131. The next prime is 198393187. The reversal of 198393163 is 361393891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198393163 - 2⁵ = 198393131 is a prime.

It is not a weakly prime, because it can be changed into another prime (198393103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99196581 + 99196582.

It is an arithmetic number, because the mean of its divisors is an integer number (99196582).

Almost surely, 2^198393163 is an apocalyptic number.

198393163 is a deficient number, since it is larger than the sum of its proper divisors (1).

198393163 is an equidigital number, since it uses as much as digits as its factorization.

198393163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 198393163 is about 14085.2107900450. The cubic root of 198393163 is about 583.2331946382.

The spelling of 198393163 in words is "one hundred ninety-eight million, three hundred ninety-three thousand, one hundred sixty-three".