18037748736 has 440 divisors, whose sum is σ = 62964016896. Its totient is φ = 5036359680.

The previous prime is 18037748723. The next prime is 18037748741. The reversal of 18037748736 is 63784773081.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27288246 + ... + 27288906.

Almost surely, 2^18037748736 is an apocalyptic number.

18037748736 is a gapful number since it is divisible by the number (16) 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 18037748736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31482008448).

18037748736 is an abundant number, since it is smaller than the sum of its proper divisors (44926268160).

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

18037748736 is an equidigital number, since it uses as much as digits as its factorization.

18037748736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 18037748736 in words is "eighteen billion, thirty-seven million, seven hundred forty-eight thousand, seven hundred thirty-six".