19210985093 has 4 divisors (see below), whose sum is σ = 19213791168. Its totient is φ = 19208179020.

The previous prime is 19210985089. The next prime is 19210985111. The reversal of 19210985093 is 39058901291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19210985093 - 2² = 19210985089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19210285093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392743 + ... + 1406468.

It is an arithmetic number, because the mean of its divisors is an integer number (4803447792).

Almost surely, 2^19210985093 is an apocalyptic number.

It is an amenable number.

19210985093 is a deficient number, since it is larger than the sum of its proper divisors (2806075).

19210985093 is an equidigital number, since it uses as much as digits as its factorization.

19210985093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806074.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 19210985093 in words is "nineteen billion, two hundred ten million, nine hundred eighty-five thousand, ninety-three".