19123406429 has 2 divisors, whose sum is σ = 19123406430. Its totient is φ = 19123406428.

The previous prime is 19123406363. The next prime is 19123406431. The reversal of 19123406429 is 92460432191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17603186329 + 1520220100 = 132677^2 + 38990^2 .

It is an emirp because it is prime and its reverse (92460432191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19123406429 - 2¹⁶ = 19123340893 is a prime.

Together with 19123406431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19123408429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9561703214 + 9561703215.

It is an arithmetic number, because the mean of its divisors is an integer number (9561703215).

Almost surely, 2^19123406429 is an apocalyptic number.

It is an amenable number.

19123406429 is a deficient number, since it is larger than the sum of its proper divisors (1).

19123406429 is an equidigital number, since it uses as much as digits as its factorization.

19123406429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 19123406429 in words is "nineteen billion, one hundred twenty-three million, four hundred six thousand, four hundred twenty-nine".