19926368783 has 2 divisors, whose sum is σ = 19926368784. Its totient is φ = 19926368782.

The previous prime is 19926368779. The next prime is 19926368857. The reversal of 19926368783 is 38786362991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19926368783 - 2² = 19926368779 is a prime.

It is a super-2 number, since 2×19926368783² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19926368983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9963184391 + 9963184392.

It is an arithmetic number, because the mean of its divisors is an integer number (9963184392).

Almost surely, 2^19926368783 is an apocalyptic number.

19926368783 is a deficient number, since it is larger than the sum of its proper divisors (1).

19926368783 is an equidigital number, since it uses as much as digits as its factorization.

19926368783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 62.

The spelling of 19926368783 in words is "nineteen billion, nine hundred twenty-six million, three hundred sixty-eight thousand, seven hundred eighty-three".