198244549 has 2 divisors, whose sum is σ = 198244550. Its totient is φ = 198244548.

The previous prime is 198244523. The next prime is 198244561. The reversal of 198244549 is 945442891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116251524 + 81993025 = 10782^2 + 9055^2 .

It is a cyclic number.

It is not a de Polignac number, because 198244549 - 2⁹ = 198244037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198244499 and 198244508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198244589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99122274 + 99122275.

It is an arithmetic number, because the mean of its divisors is an integer number (99122275).

Almost surely, 2^198244549 is an apocalyptic number.

It is an amenable number.

198244549 is a deficient number, since it is larger than the sum of its proper divisors (1).

198244549 is an equidigital number, since it uses as much as digits as its factorization.

198244549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 46.

The square root of 198244549 is about 14079.9342683125. The cubic root of 198244549 is about 583.0875272027.

The spelling of 198244549 in words is "one hundred ninety-eight million, two hundred forty-four thousand, five hundred forty-nine".