199688163 has 16 divisors (see below), whose sum is σ = 273184800. Its totient is φ = 129669120.

The previous prime is 199688117. The next prime is 199688179. The reversal of 199688163 is 361886991.

It is not a de Polignac number, because 199688163 - 2⁸ = 199687907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199688183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123303 + ... + 124911.

It is an arithmetic number, because the mean of its divisors is an integer number (17074050).

Almost surely, 2^199688163 is an apocalyptic number.

199688163 is a deficient number, since it is larger than the sum of its proper divisors (73496637).

199688163 is a wasteful number, since it uses less digits than its factorization.

199688163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662.

The product of its digits is 559872, while the sum is 51.

The square root of 199688163 is about 14131.1062199674. The cubic root of 199688163 is about 584.4994505668.

The spelling of 199688163 in words is "one hundred ninety-nine million, six hundred eighty-eight thousand, one hundred sixty-three".