198548111 has 2 divisors, whose sum is σ = 198548112. Its totient is φ = 198548110.

The previous prime is 198548089. The next prime is 198548173. The reversal of 198548111 is 111845891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198548111 - 2¹⁰ = 198547087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198548191) 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, 99274055 + 99274056.

It is an arithmetic number, because the mean of its divisors is an integer number (99274056).

Almost surely, 2^198548111 is an apocalyptic number.

198548111 is a deficient number, since it is larger than the sum of its proper divisors (1).

198548111 is an equidigital number, since it uses as much as digits as its factorization.

198548111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 38.

The square root of 198548111 is about 14090.7100956623. The cubic root of 198548111 is about 583.3849930485.

The spelling of 198548111 in words is "one hundred ninety-eight million, five hundred forty-eight thousand, one hundred eleven".