198482209 has 2 divisors, whose sum is σ = 198482210. Its totient is φ = 198482208.

The previous prime is 198482201. The next prime is 198482237. The reversal of 198482209 is 902284891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111936400 + 86545809 = 10580^2 + 9303^2 .

It is a cyclic number.

It is not a de Polignac number, because 198482209 - 2³ = 198482201 is a prime.

It is not a weakly prime, because it can be changed into another prime (198482201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99241104 + 99241105.

It is an arithmetic number, because the mean of its divisors is an integer number (99241105).

Almost surely, 2^198482209 is an apocalyptic number.

It is an amenable number.

198482209 is a deficient number, since it is larger than the sum of its proper divisors (1).

198482209 is an equidigital number, since it uses as much as digits as its factorization.

198482209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 198482209 is about 14088.3714104931. The cubic root of 198482209 is about 583.3204402774.

The spelling of 198482209 in words is "one hundred ninety-eight million, four hundred eighty-two thousand, two hundred nine".