19737042659 has 2 divisors, whose sum is σ = 19737042660. Its totient is φ = 19737042658.

The previous prime is 19737042641. The next prime is 19737042667. The reversal of 19737042659 is 95624073791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19737042659 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19737042659.

It is not a weakly prime, because it can be changed into another prime (19737042859) 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, 9868521329 + 9868521330.

It is an arithmetic number, because the mean of its divisors is an integer number (9868521330).

Almost surely, 2^19737042659 is an apocalyptic number.

19737042659 is a deficient number, since it is larger than the sum of its proper divisors (1).

19737042659 is an equidigital number, since it uses as much as digits as its factorization.

19737042659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 19737042659 in words is "nineteen billion, seven hundred thirty-seven million, forty-two thousand, six hundred fifty-nine".