198244219 has 2 divisors, whose sum is σ = 198244220. Its totient is φ = 198244218.

The previous prime is 198244213. The next prime is 198244243. The reversal of 198244219 is 912442891.

It is a weak prime.

It is an emirp because it is prime and its reverse (912442891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198244219 - 2⁷ = 198244091 is a prime.

It is a super-2 number, since 2×198244219² = 78601540733839922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (198244213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99122109 + 99122110.

It is an arithmetic number, because the mean of its divisors is an integer number (99122110).

Almost surely, 2^198244219 is an apocalyptic number.

198244219 is a deficient number, since it is larger than the sum of its proper divisors (1).

198244219 is an equidigital number, since it uses as much as digits as its factorization.

198244219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 198244219 is about 14079.9225495029. The cubic root of 198244219 is about 583.0872036646.

The spelling of 198244219 in words is "one hundred ninety-eight million, two hundred forty-four thousand, two hundred nineteen".