198539583701 has 2 divisors, whose sum is σ = 198539583702. Its totient is φ = 198539583700.

The previous prime is 198539583677. The next prime is 198539583707. The reversal of 198539583701 is 107385935891.

It is a happy number.

198539583701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140605500676 + 57934083025 = 374974^2 + 240695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198539583701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198539583707) 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, 99269791850 + 99269791851.

It is an arithmetic number, because the mean of its divisors is an integer number (99269791851).

Almost surely, 2^198539583701 is an apocalyptic number.

It is an amenable number.

198539583701 is a deficient number, since it is larger than the sum of its proper divisors (1).

198539583701 is an equidigital number, since it uses as much as digits as its factorization.

198539583701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 59.

The spelling of 198539583701 in words is "one hundred ninety-eight billion, five hundred thirty-nine million, five hundred eighty-three thousand, seven hundred one".