19926237823 has 2 divisors, whose sum is σ = 19926237824. Its totient is φ = 19926237822.

The previous prime is 19926237791. The next prime is 19926237833. The reversal of 19926237823 is 32873262991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19926237823 - 2⁵ = 19926237791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19926237833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9963118911 + 9963118912.

It is an arithmetic number, because the mean of its divisors is an integer number (9963118912).

Almost surely, 2^19926237823 is an apocalyptic number.

19926237823 is a deficient number, since it is larger than the sum of its proper divisors (1).

19926237823 is an equidigital number, since it uses as much as digits as its factorization.

19926237823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The spelling of 19926237823 in words is "nineteen billion, nine hundred twenty-six million, two hundred thirty-seven thousand, eight hundred twenty-three".