18412748648 has 64 divisors (see below), whose sum is σ = 40609382400. Its totient is φ = 7663803840.

The previous prime is 18412748639. The next prime is 18412748663. The reversal of 18412748648 is 84684721481.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18412748648.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231833 + ... + 300951.

It is an arithmetic number, because the mean of its divisors is an integer number (634521600).

Almost surely, 2^18412748648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18412748648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20304691200).

18412748648 is an abundant number, since it is smaller than the sum of its proper divisors (22196633752).

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

18412748648 is a wasteful number, since it uses less digits than its factorization.

18412748648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69270 (or 69266 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The spelling of 18412748648 in words is "eighteen billion, four hundred twelve million, seven hundred forty-eight thousand, six hundred forty-eight".