198380690801641 has 2 divisors, whose sum is σ = 198380690801642. Its totient is φ = 198380690801640.

The previous prime is 198380690801633. The next prime is 198380690801677. The reversal of 198380690801641 is 146108096083891.

198380690801641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193293297776016 + 5087393025625 = 13902996^2 + 2255525^2 .

It is a cyclic number.

It is not a de Polignac number, because 198380690801641 - 2³ = 198380690801633 is a prime.

It is not a weakly prime, because it can be changed into another prime (198380690801141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99190345400820 + 99190345400821.

It is an arithmetic number, because the mean of its divisors is an integer number (99190345400821).

Almost surely, 2^{198380690801641} is an apocalyptic number.

It is an amenable number.

198380690801641 is a deficient number, since it is larger than the sum of its proper divisors (1).

198380690801641 is an equidigital number, since it uses as much as digits as its factorization.

198380690801641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 198380690801641 in words is "one hundred ninety-eight trillion, three hundred eighty billion, six hundred ninety million, eight hundred one thousand, six hundred forty-one".