19385123 has 2 divisors, whose sum is σ = 19385124. Its totient is φ = 19385122.

The previous prime is 19385081. The next prime is 19385141. The reversal of 19385123 is 32158391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19385123 - 2¹² = 19381027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19385123.

It is not a weakly prime, because it can be changed into another prime (19385143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9692561 + 9692562.

It is an arithmetic number, because the mean of its divisors is an integer number (9692562).

Almost surely, 2^19385123 is an apocalyptic number.

19385123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19385123 is an equidigital number, since it uses as much as digits as its factorization.

19385123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 19385123 is about 4402.8539607850. The cubic root of 19385123 is about 268.6310360081.

The spelling of 19385123 in words is "nineteen million, three hundred eighty-five thousand, one hundred twenty-three".