19089381911 has 2 divisors, whose sum is σ = 19089381912. Its totient is φ = 19089381910.

The previous prime is 19089381853. The next prime is 19089381919. The reversal of 19089381911 is 11918398091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19089381911 - 2¹⁰ = 19089380887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19089381911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19089381919) 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, 9544690955 + 9544690956.

It is an arithmetic number, because the mean of its divisors is an integer number (9544690956).

Almost surely, 2^19089381911 is an apocalyptic number.

19089381911 is a deficient number, since it is larger than the sum of its proper divisors (1).

19089381911 is an equidigital number, since it uses as much as digits as its factorization.

19089381911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 50.

The spelling of 19089381911 in words is "nineteen billion, eighty-nine million, three hundred eighty-one thousand, nine hundred eleven".