19900010839 has 2 divisors, whose sum is σ = 19900010840. Its totient is φ = 19900010838.

The previous prime is 19900010783. The next prime is 19900010887. The reversal of 19900010839 is 93801000991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19900010839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19900020839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9950005419 + 9950005420.

It is an arithmetic number, because the mean of its divisors is an integer number (9950005420).

Almost surely, 2^19900010839 is an apocalyptic number.

19900010839 is a deficient number, since it is larger than the sum of its proper divisors (1).

19900010839 is an equidigital number, since it uses as much as digits as its factorization.

19900010839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 19900010839 in words is "nineteen billion, nine hundred million, ten thousand, eight hundred thirty-nine".