19434658339 has 2 divisors, whose sum is σ = 19434658340. Its totient is φ = 19434658338.

The previous prime is 19434658279. The next prime is 19434658363. The reversal of 19434658339 is 93385643491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19434658339 - 2¹⁵ = 19434625571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19434658339.

It is not a weakly prime, because it can be changed into another prime (19434653339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9717329169 + 9717329170.

It is an arithmetic number, because the mean of its divisors is an integer number (9717329170).

Almost surely, 2^19434658339 is an apocalyptic number.

19434658339 is a deficient number, since it is larger than the sum of its proper divisors (1).

19434658339 is an equidigital number, since it uses as much as digits as its factorization.

19434658339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 55.

The spelling of 19434658339 in words is "nineteen billion, four hundred thirty-four million, six hundred fifty-eight thousand, three hundred thirty-nine".