18872049189 has 12 divisors (see below), whose sum is σ = 29270933664. Its totient is φ = 10784028024.

The previous prime is 18872049179. The next prime is 18872049191. The reversal of 18872049189 is 98194027881.

It is not a de Polignac number, because 18872049189 - 2¹⁹ = 18871524901 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18872049179) 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 in 11 ways as a sum of consecutive naturals, for example, 64190497 + ... + 64190790.

It is an arithmetic number, because the mean of its divisors is an integer number (2439244472).

Almost surely, 2^18872049189 is an apocalyptic number.

It is an amenable number.

18872049189 is a deficient number, since it is larger than the sum of its proper divisors (10398884475).

18872049189 is a wasteful number, since it uses less digits than its factorization.

18872049189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128381304 (or 128381297 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 57.

The spelling of 18872049189 in words is "eighteen billion, eight hundred seventy-two million, forty-nine thousand, one hundred eighty-nine".