198962749121 has 2 divisors, whose sum is σ = 198962749122. Its totient is φ = 198962749120.

The previous prime is 198962749067. The next prime is 198962749129. The reversal of 198962749121 is 121947269891.

198962749121 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., 164203248400 + 34759500721 = 405220^2 + 186439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198962749121 is a prime.

It is not a weakly prime, because it can be changed into another prime (198962749129) 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, 99481374560 + 99481374561.

It is an arithmetic number, because the mean of its divisors is an integer number (99481374561).

Almost surely, 2^198962749121 is an apocalyptic number.

It is an amenable number.

198962749121 is a deficient number, since it is larger than the sum of its proper divisors (1).

198962749121 is an equidigital number, since it uses as much as digits as its factorization.

198962749121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 59.

The spelling of 198962749121 in words is "one hundred ninety-eight billion, nine hundred sixty-two million, seven hundred forty-nine thousand, one hundred twenty-one".