198331199 has 4 divisors (see below), whose sum is σ = 216361320. Its totient is φ = 180301080.

The previous prime is 198331181. The next prime is 198331207. The reversal of 198331199 is 991133891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198331199 - 2²⁰ = 197282623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198330199) 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 in 3 ways as a sum of consecutive naturals, for example, 9015044 + ... + 9015065.

It is an arithmetic number, because the mean of its divisors is an integer number (54090330).

Almost surely, 2^198331199 is an apocalyptic number.

198331199 is a deficient number, since it is larger than the sum of its proper divisors (18030121).

198331199 is a wasteful number, since it uses less digits than its factorization.

198331199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18030120.

The product of its digits is 52488, while the sum is 44.

The square root of 198331199 is about 14083.0110061734. The cubic root of 198331199 is about 583.1724680415.

The spelling of 198331199 in words is "one hundred ninety-eight million, three hundred thirty-one thousand, one hundred ninety-nine".