199554163 has 2 divisors, whose sum is σ = 199554164. Its totient is φ = 199554162.

The previous prime is 199554149. The next prime is 199554193. The reversal of 199554163 is 361455991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199554163 is a prime.

It is not a weakly prime, because it can be changed into another prime (199554193) 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, 99777081 + 99777082.

It is an arithmetic number, because the mean of its divisors is an integer number (99777082).

Almost surely, 2^199554163 is an apocalyptic number.

199554163 is a deficient number, since it is larger than the sum of its proper divisors (1).

199554163 is an equidigital number, since it uses as much as digits as its factorization.

199554163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The square root of 199554163 is about 14126.3641111222. The cubic root of 199554163 is about 584.3686792495.

The spelling of 199554163 in words is "one hundred ninety-nine million, five hundred fifty-four thousand, one hundred sixty-three".