19388168123 has 2 divisors, whose sum is σ = 19388168124. Its totient is φ = 19388168122.

The previous prime is 19388168083. The next prime is 19388168141. The reversal of 19388168123 is 32186188391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19388168123 - 2¹² = 19388164027 is a prime.

It is not a weakly prime, because it can be changed into another prime (19388168153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9694084061 + 9694084062.

It is an arithmetic number, because the mean of its divisors is an integer number (9694084062).

Almost surely, 2^19388168123 is an apocalyptic number.

19388168123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19388168123 is an equidigital number, since it uses as much as digits as its factorization.

19388168123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The spelling of 19388168123 in words is "nineteen billion, three hundred eighty-eight million, one hundred sixty-eight thousand, one hundred twenty-three".