19306421093 has 16 divisors (see below), whose sum is σ = 20667193344. Its totient is φ = 17970923520.

The previous prime is 19306421081. The next prime is 19306421119. The reversal of 19306421093 is 39012460391.

It is a cyclic number.

It is not a de Polignac number, because 19306421093 - 2¹⁶ = 19306355557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19306421023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3075548 + ... + 3081818.

It is an arithmetic number, because the mean of its divisors is an integer number (1291699584).

Almost surely, 2^19306421093 is an apocalyptic number.

It is an amenable number.

19306421093 is a deficient number, since it is larger than the sum of its proper divisors (1360772251).

19306421093 is a wasteful number, since it uses less digits than its factorization.

19306421093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 19306421093 in words is "nineteen billion, three hundred six million, four hundred twenty-one thousand, ninety-three".