18481481228 has 12 divisors (see below), whose sum is σ = 36962962512. Its totient is φ = 7920634800.

The previous prime is 18481481209. The next prime is 18481481233. The reversal of 18481481228 is 82218418481.

18481481228 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330026423 + ... + 330026478.

It is an arithmetic number, because the mean of its divisors is an integer number (3080246876).

Almost surely, 2^18481481228 is an apocalyptic number.

It is an amenable number.

18481481228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18481481228 is a wasteful number, since it uses less digits than its factorization.

18481481228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660052912 (or 660052910 counting only the distinct ones).

The product of its digits is 262144, while the sum is 47.

The spelling of 18481481228 in words is "eighteen billion, four hundred eighty-one million, four hundred eighty-one thousand, two hundred twenty-eight".