198933406041649 has 2 divisors, whose sum is σ = 198933406041650. Its totient is φ = 198933406041648.

The previous prime is 198933406041613. The next prime is 198933406041691. The reversal of 198933406041649 is 946140604339891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190918884675600 + 8014521366049 = 13817340^2 + 2830993^2 .

It is a cyclic number.

It is not a de Polignac number, because 198933406041649 - 2²¹ = 198933403944497 is a prime.

It is not a weakly prime, because it can be changed into another prime (198933406081649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99466703020824 + 99466703020825.

It is an arithmetic number, because the mean of its divisors is an integer number (99466703020825).

Almost surely, 2^{198933406041649} is an apocalyptic number.

It is an amenable number.

198933406041649 is a deficient number, since it is larger than the sum of its proper divisors (1).

198933406041649 is an equidigital number, since it uses as much as digits as its factorization.

198933406041649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120932352, while the sum is 67.

The spelling of 198933406041649 in words is "one hundred ninety-eight trillion, nine hundred thirty-three billion, four hundred six million, forty-one thousand, six hundred forty-nine".