198180041 has 2 divisors, whose sum is σ = 198180042. Its totient is φ = 198180040.

The previous prime is 198179951. The next prime is 198180097. The reversal of 198180041 is 140081891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159491641 + 38688400 = 12629^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 198180041 - 2¹⁸ = 197917897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198180641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99090020 + 99090021.

It is an arithmetic number, because the mean of its divisors is an integer number (99090021).

Almost surely, 2^198180041 is an apocalyptic number.

It is an amenable number.

198180041 is a deficient number, since it is larger than the sum of its proper divisors (1).

198180041 is an equidigital number, since it uses as much as digits as its factorization.

198180041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 198180041 is about 14077.6433041898. The cubic root of 198180041 is about 583.0242755422.

The spelling of 198180041 in words is "one hundred ninety-eight million, one hundred eighty thousand, forty-one".