198213199 has 2 divisors, whose sum is σ = 198213200. Its totient is φ = 198213198.

The previous prime is 198213179. The next prime is 198213221. The reversal of 198213199 is 991312891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198213199 - 2¹¹ = 198211151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198213179) 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 as a sum of consecutive naturals, namely, 99106599 + 99106600.

It is an arithmetic number, because the mean of its divisors is an integer number (99106600).

Almost surely, 2^198213199 is an apocalyptic number.

198213199 is a deficient number, since it is larger than the sum of its proper divisors (1).

198213199 is an equidigital number, since it uses as much as digits as its factorization.

198213199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 43.

The square root of 198213199 is about 14078.8209378485. The cubic root of 198213199 is about 583.0567894805.

The spelling of 198213199 in words is "one hundred ninety-eight million, two hundred thirteen thousand, one hundred ninety-nine".