998926359187 has 2 divisors, whose sum is σ = 998926359188. Its totient is φ = 998926359186.

The previous prime is 998926359161. The next prime is 998926359247. The reversal of 998926359187 is 781953629899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998926359187 - 2⁷ = 998926359059 is a prime.

It is not a weakly prime, because it can be changed into another prime (998926359157) 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, 499463179593 + 499463179594.

It is an arithmetic number, because the mean of its divisors is an integer number (499463179594).

Almost surely, 2^998926359187 is an apocalyptic number.

998926359187 is a deficient number, since it is larger than the sum of its proper divisors (1).

998926359187 is an equidigital number, since it uses as much as digits as its factorization.

998926359187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529079040, while the sum is 76.

The spelling of 998926359187 in words is "nine hundred ninety-eight billion, nine hundred twenty-six million, three hundred fifty-nine thousand, one hundred eighty-seven".