18240983040 has 624 divisors, whose sum is σ = 69652070208. Its totient is φ = 4062707712.

The previous prime is 18240983021. The next prime is 18240983147. The reversal of 18240983040 is 4038904281.

It is a self number, because there is not a number n which added to its sum of digits gives 18240983040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219770839 + ... + 219770921.

Almost surely, 2^18240983040 is an apocalyptic number.

18240983040 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 18240983040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34826035104).

18240983040 is an abundant number, since it is smaller than the sum of its proper divisors (51411087168).

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

18240983040 is an equidigital number, since it uses as much as digits as its factorization.

18240983040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 18240983040 in words is "eighteen billion, two hundred forty million, nine hundred eighty-three thousand, forty".