19728016339 has 2 divisors, whose sum is σ = 19728016340. Its totient is φ = 19728016338.

The previous prime is 19728016309. The next prime is 19728016361. The reversal of 19728016339 is 93361082791.

It is a strong prime.

It is an emirp because it is prime and its reverse (93361082791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19728016339 - 2⁷ = 19728016211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19728016292 and 19728016301.

It is not a weakly prime, because it can be changed into another prime (19728016309) 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, 9864008169 + 9864008170.

It is an arithmetic number, because the mean of its divisors is an integer number (9864008170).

Almost surely, 2^19728016339 is an apocalyptic number.

19728016339 is a deficient number, since it is larger than the sum of its proper divisors (1).

19728016339 is an equidigital number, since it uses as much as digits as its factorization.

19728016339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 19728016339 in words is "nineteen billion, seven hundred twenty-eight million, sixteen thousand, three hundred thirty-nine".