18013748544 has 224 divisors, whose sum is σ = 58864682880. Its totient is φ = 5355417600.

The previous prime is 18013748527. The next prime is 18013748549. The reversal of 18013748544 is 44584731081.

It is a self number, because there is not a number n which added to its sum of digits gives 18013748544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013748549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998484 + ... + 1016364.

Almost surely, 2^18013748544 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 18013748544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29432341440).

18013748544 is an abundant number, since it is smaller than the sum of its proper divisors (40850934336).

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

18013748544 is a wasteful number, since it uses less digits than its factorization.

18013748544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966 (or 17950 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 18013748544 in words is "eighteen billion, thirteen million, seven hundred forty-eight thousand, five hundred forty-four".