18812925189 has 8 divisors (see below), whose sum is σ = 27871000320. Its totient is φ = 12541950108.

The previous prime is 18812925179. The next prime is 18812925199. The reversal of 18812925189 is 98152921881.

It is an interprime number because it is at equal distance from previous prime (18812925179) and next prime (18812925199).

It is not a de Polignac number, because 18812925189 - 2¹¹ = 18812923141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18812925179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348387477 + ... + 348387530.

It is an arithmetic number, because the mean of its divisors is an integer number (3483875040).

Almost surely, 2^18812925189 is an apocalyptic number.

It is an amenable number.

18812925189 is a deficient number, since it is larger than the sum of its proper divisors (9058075131).

18812925189 is an equidigital number, since it uses as much as digits as its factorization.

18812925189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696775016 (or 696775010 counting only the distinct ones).

The product of its digits is 829440, while the sum is 54.

The spelling of 18812925189 in words is "eighteen billion, eight hundred twelve million, nine hundred twenty-five thousand, one hundred eighty-nine".