19389506023427 has 2 divisors, whose sum is σ = 19389506023428. Its totient is φ = 19389506023426.

The previous prime is 19389506023397. The next prime is 19389506023493. The reversal of 19389506023427 is 72432060598391.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19389506023427 - 2¹⁴ = 19389506007043 is a prime.

It is not a weakly prime, because it can be changed into another prime (19389506025427) 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, 9694753011713 + 9694753011714.

It is an arithmetic number, because the mean of its divisors is an integer number (9694753011714).

It is a 2-persistent number, because it is pandigital, and so is 2⋅19389506023427 = 38779012046854, but 3⋅19389506023427 = 58168518070281 is not.

Almost surely, 2^{19389506023427} is an apocalyptic number.

19389506023427 is a deficient number, since it is larger than the sum of its proper divisors (1).

19389506023427 is an equidigital number, since it uses as much as digits as its factorization.

19389506023427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 19389506023427 in words is "nineteen trillion, three hundred eighty-nine billion, five hundred six million, twenty-three thousand, four hundred twenty-seven".