18811259112 has 16 divisors (see below), whose sum is σ = 47028147840. Its totient is φ = 6270419696.

The previous prime is 18811259099. The next prime is 18811259119. The reversal of 18811259112 is 21195211881.

It is not an unprimeable number, because it can be changed into a prime (18811259119) 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, 391901208 + ... + 391901255.

It is an arithmetic number, because the mean of its divisors is an integer number (2939259240).

Almost surely, 2^18811259112 is an apocalyptic number.

18811259112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18811259112 is an abundant number, since it is smaller than the sum of its proper divisors (28216888728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18811259112 is a wasteful number, since it uses less digits than its factorization.

18811259112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783802472 (or 783802468 counting only the distinct ones).

The product of its digits is 11520, while the sum is 39.

The spelling of 18811259112 in words is "eighteen billion, eight hundred eleven million, two hundred fifty-nine thousand, one hundred twelve".