18441279120 has 160 divisors (see below), whose sum is σ = 62711236224. Its totient is φ = 4445798400.

The previous prime is 18441279071. The next prime is 18441279211. The reversal of 18441279120 is 2197214481.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458544 + ... + 497136.

Almost surely, 2^18441279120 is an apocalyptic number.

18441279120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18441279120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31355618112).

18441279120 is an abundant number, since it is smaller than the sum of its proper divisors (44269957104).

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

18441279120 is a wasteful number, since it uses less digits than its factorization.

18441279120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38801 (or 38795 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 18441279120 in words is "eighteen billion, four hundred forty-one million, two hundred seventy-nine thousand, one hundred twenty".