18841875493 has 16 divisors (see below), whose sum is σ = 22229387136. Its totient is φ = 15634967040.

The previous prime is 18841875457. The next prime is 18841875497. The reversal of 18841875493 is 39457814881.

It is not a de Polignac number, because 18841875493 - 2²⁵ = 18808321061 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 (18841875497) 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, 242968 + ... + 310993.

It is an arithmetic number, because the mean of its divisors is an integer number (1389336696).

Almost surely, 2^18841875493 is an apocalyptic number.

It is an amenable number.

18841875493 is a deficient number, since it is larger than the sum of its proper divisors (3387511643).

18841875493 is a wasteful number, since it uses less digits than its factorization.

18841875493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554124.

The product of its digits is 7741440, while the sum is 58.

The spelling of 18841875493 in words is "eighteen billion, eight hundred forty-one million, eight hundred seventy-five thousand, four hundred ninety-three".