199319198 has 16 divisors (see below), whose sum is σ = 328829760. Its totient is φ = 90035616.

The previous prime is 199319143. The next prime is 199319209. The reversal of 199319198 is 891913991.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 80333 + ... + 82776.

It is an arithmetic number, because the mean of its divisors is an integer number (20551860).

Almost surely, 2^199319198 is an apocalyptic number.

199319198 is a deficient number, since it is larger than the sum of its proper divisors (129510562).

199319198 is a wasteful number, since it uses less digits than its factorization.

199319198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163171.

The product of its digits is 157464, while the sum is 50.

The square root of 199319198 is about 14118.0451196332. The cubic root of 199319198 is about 584.1392342535.

The spelling of 199319198 in words is "one hundred ninety-nine million, three hundred nineteen thousand, one hundred ninety-eight".