198295397563 has 2 divisors, whose sum is σ = 198295397564. Its totient is φ = 198295397562.

The previous prime is 198295397561. The next prime is 198295397569. The reversal of 198295397563 is 365793592891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198295397563 - 2¹ = 198295397561 is a prime.

Together with 198295397561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (198295397561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99147698781 + 99147698782.

It is an arithmetic number, because the mean of its divisors is an integer number (99147698782).

Almost surely, 2^198295397563 is an apocalyptic number.

198295397563 is a deficient number, since it is larger than the sum of its proper divisors (1).

198295397563 is an equidigital number, since it uses as much as digits as its factorization.

198295397563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110224800, while the sum is 67.

The spelling of 198295397563 in words is "one hundred ninety-eight billion, two hundred ninety-five million, three hundred ninety-seven thousand, five hundred sixty-three".