198380690801633 has 2 divisors, whose sum is σ = 198380690801634. Its totient is φ = 198380690801632.

The previous prime is 198380690801617. The next prime is 198380690801641. The reversal of 198380690801633 is 336108096083891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141649320329104 + 56731370472529 = 11901652^2 + 7532023^2 .

It is a cyclic number.

It is not a de Polignac number, because 198380690801633 - 2⁴ = 198380690801617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 198380690801633.

It is not a weakly prime, because it can be changed into another prime (198380690804633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99190345400816 + 99190345400817.

It is an arithmetic number, because the mean of its divisors is an integer number (99190345400817).

Almost surely, 2^{198380690801633} is an apocalyptic number.

It is an amenable number.

198380690801633 is a deficient number, since it is larger than the sum of its proper divisors (1).

198380690801633 is an equidigital number, since it uses as much as digits as its factorization.

198380690801633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40310784, while the sum is 65.

The spelling of 198380690801633 in words is "one hundred ninety-eight trillion, three hundred eighty billion, six hundred ninety million, eight hundred one thousand, six hundred thirty-three".