19968849079 has 2 divisors, whose sum is σ = 19968849080. Its totient is φ = 19968849078.

The previous prime is 19968848981. The next prime is 19968849091. The reversal of 19968849079 is 97094886991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19968849079 - 2³¹ = 17821365431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19968848999 and 19968849017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19968847079) 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, 9984424539 + 9984424540.

It is an arithmetic number, because the mean of its divisors is an integer number (9984424540).

Almost surely, 2^19968849079 is an apocalyptic number.

19968849079 is a deficient number, since it is larger than the sum of its proper divisors (1).

19968849079 is an equidigital number, since it uses as much as digits as its factorization.

19968849079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 70.

The spelling of 19968849079 in words is "nineteen billion, nine hundred sixty-eight million, eight hundred forty-nine thousand, seventy-nine".