198264568319 has 2 divisors, whose sum is σ = 198264568320. Its totient is φ = 198264568318.

The previous prime is 198264568303. The next prime is 198264568321. The reversal of 198264568319 is 913865462891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198264568319 - 2⁴ = 198264568303 is a prime.

It is a super-2 number, since 2×198264568319² (a number of 23 digits) contains 22 as substring.

Together with 198264568321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198264568519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99132284159 + 99132284160.

It is an arithmetic number, because the mean of its divisors is an integer number (99132284160).

Almost surely, 2^198264568319 is an apocalyptic number.

198264568319 is a deficient number, since it is larger than the sum of its proper divisors (1).

198264568319 is an equidigital number, since it uses as much as digits as its factorization.

198264568319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22394880, while the sum is 62.

The spelling of 198264568319 in words is "one hundred ninety-eight billion, two hundred sixty-four million, five hundred sixty-eight thousand, three hundred nineteen".