19293943423 has 2 divisors, whose sum is σ = 19293943424. Its totient is φ = 19293943422.

The previous prime is 19293943379. The next prime is 19293943453. The reversal of 19293943423 is 32434939291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19293943423 - 2⁹ = 19293942911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19293943453) 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, 9646971711 + 9646971712.

It is an arithmetic number, because the mean of its divisors is an integer number (9646971712).

Almost surely, 2^19293943423 is an apocalyptic number.

19293943423 is a deficient number, since it is larger than the sum of its proper divisors (1).

19293943423 is an equidigital number, since it uses as much as digits as its factorization.

19293943423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 49.

The spelling of 19293943423 in words is "nineteen billion, two hundred ninety-three million, nine hundred forty-three thousand, four hundred twenty-three".