198223198 has 4 divisors (see below), whose sum is σ = 297334800. Its totient is φ = 99111598.

The previous prime is 198223189. The next prime is 198223211. The reversal of 198223198 is 891322891.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49555798 + ... + 49555801.

It is an arithmetic number, because the mean of its divisors is an integer number (74333700).

Almost surely, 2^198223198 is an apocalyptic number.

198223198 is a deficient number, since it is larger than the sum of its proper divisors (99111602).

198223198 is an equidigital number, since it uses as much as digits as its factorization.

198223198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99111601.

The product of its digits is 62208, while the sum is 43.

The square root of 198223198 is about 14079.1760412320. The cubic root of 198223198 is about 583.0665935481.

The spelling of 198223198 in words is "one hundred ninety-eight million, two hundred twenty-three thousand, one hundred ninety-eight".