19698113999 has 2 divisors, whose sum is σ = 19698114000. Its totient is φ = 19698113998.

The previous prime is 19698113989. The next prime is 19698114053. The reversal of 19698113999 is 99931189691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19698113999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19698113989) 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, 9849056999 + 9849057000.

It is an arithmetic number, because the mean of its divisors is an integer number (9849057000).

Almost surely, 2^19698113999 is an apocalyptic number.

19698113999 is a deficient number, since it is larger than the sum of its proper divisors (1).

19698113999 is an equidigital number, since it uses as much as digits as its factorization.

19698113999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8503056, while the sum is 65.

The spelling of 19698113999 in words is "nineteen billion, six hundred ninety-eight million, one hundred thirteen thousand, nine hundred ninety-nine".