198000841 has 2 divisors, whose sum is σ = 198000842. Its totient is φ = 198000840.

The previous prime is 198000833. The next prime is 198000857. The reversal of 198000841 is 148000891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126090441 + 71910400 = 11229^2 + 8480^2 .

It is a cyclic number.

It is not a de Polignac number, because 198000841 - 2³ = 198000833 is a prime.

It is not a weakly prime, because it can be changed into another prime (198000541) 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, 99000420 + 99000421.

It is an arithmetic number, because the mean of its divisors is an integer number (99000421).

Almost surely, 2^198000841 is an apocalyptic number.

It is an amenable number.

198000841 is a deficient number, since it is larger than the sum of its proper divisors (1).

198000841 is an equidigital number, since it uses as much as digits as its factorization.

198000841 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 31.

The square root of 198000841 is about 14071.2771630723. The cubic root of 198000841 is about 582.8484935342.

The spelling of 198000841 in words is "one hundred ninety-eight million, eight hundred forty-one", and thus it is an aban number.