198315246289 has 2 divisors, whose sum is σ = 198315246290. Its totient is φ = 198315246288.

The previous prime is 198315246221. The next prime is 198315246313. The reversal of 198315246289 is 982642513891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151969767889 + 46345478400 = 389833^2 + 215280^2 .

It is an emirp because it is prime and its reverse (982642513891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198315246289 - 2²⁵ = 198281691857 is a prime.

It is not a weakly prime, because it can be changed into another prime (198315244289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99157623144 + 99157623145.

It is an arithmetic number, because the mean of its divisors is an integer number (99157623145).

Almost surely, 2^198315246289 is an apocalyptic number.

It is an amenable number.

198315246289 is a deficient number, since it is larger than the sum of its proper divisors (1).

198315246289 is an equidigital number, since it uses as much as digits as its factorization.

198315246289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 58.

The spelling of 198315246289 in words is "one hundred ninety-eight billion, three hundred fifteen million, two hundred forty-six thousand, two hundred eighty-nine".