198112049 has 2 divisors, whose sum is σ = 198112050. Its totient is φ = 198112048.

The previous prime is 198112043. The next prime is 198112063. The reversal of 198112049 is 940211891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172791025 + 25321024 = 13145^2 + 5032^2 .

It is a cyclic number.

It is not a de Polignac number, because 198112049 - 2²⁴ = 181334833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198112043) 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, 99056024 + 99056025.

It is an arithmetic number, because the mean of its divisors is an integer number (99056025).

Almost surely, 2^198112049 is an apocalyptic number.

It is an amenable number.

198112049 is a deficient number, since it is larger than the sum of its proper divisors (1).

198112049 is an equidigital number, since it uses as much as digits as its factorization.

198112049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 198112049 is about 14075.2282041891. The cubic root of 198112049 is about 582.9575928757.

The spelling of 198112049 in words is "one hundred ninety-eight million, one hundred twelve thousand, forty-nine".