18441244080 has 400 divisors, whose sum is σ = 74701915200. Its totient is φ = 4214633472.

The previous prime is 18441244069. The next prime is 18441244103. The reversal of 18441244080 is 8044214481.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2218492 + ... + 2226788.

It is an arithmetic number, because the mean of its divisors is an integer number (186754788).

Almost surely, 2^18441244080 is an apocalyptic number.

18441244080 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 18441244080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37350957600).

18441244080 is an abundant number, since it is smaller than the sum of its proper divisors (56260671120).

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

18441244080 is an equidigital number, since it uses as much as digits as its factorization.

18441244080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343 (or 8314 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The spelling of 18441244080 in words is "eighteen billion, four hundred forty-one million, two hundred forty-four thousand, eighty".