19243400023 has 2 divisors, whose sum is σ = 19243400024. Its totient is φ = 19243400022.

The previous prime is 19243400017. The next prime is 19243400027. The reversal of 19243400023 is 32000434291.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19243400023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19243399964 and 19243400000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19243400027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9621700011 + 9621700012.

It is an arithmetic number, because the mean of its divisors is an integer number (9621700012).

Almost surely, 2^19243400023 is an apocalyptic number.

19243400023 is a deficient number, since it is larger than the sum of its proper divisors (1).

19243400023 is an equidigital number, since it uses as much as digits as its factorization.

19243400023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 19243400023 in words is "nineteen billion, two hundred forty-three million, four hundred thousand, twenty-three".