18384548382 has 48 divisors (see below), whose sum is σ = 41204283120. Its totient is φ = 5919630336.

The previous prime is 18384548317. The next prime is 18384548387. The reversal of 18384548382 is 28384548381.

18384548382 is a `hidden beast` number, since 1 + 8 + 3 + 84 + 5 + 483 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18384548387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6723 + ... + 191870.

It is an arithmetic number, because the mean of its divisors is an integer number (858422565).

Almost surely, 2^18384548382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18384548382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20602141560).

18384548382 is an abundant number, since it is smaller than the sum of its proper divisors (22819734738).

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

18384548382 is a wasteful number, since it uses less digits than its factorization.

18384548382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198777 (or 198774 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 54.

Subtracting 18384548382 from its reverse (28384548381), we obtain a palindrome (9999999999).

The spelling of 18384548382 in words is "eighteen billion, three hundred eighty-four million, five hundred forty-eight thousand, three hundred eighty-two".