18623987382 has 128 divisors (see below), whose sum is σ = 50086149120. Its totient is φ = 4458608640.

The previous prime is 18623987381. The next prime is 18623987401. The reversal of 18623987382 is 28378932681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18623987381) 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 63 ways as a sum of consecutive naturals, for example, 4856938 + ... + 4860770.

It is an arithmetic number, because the mean of its divisors is an integer number (391298040).

Almost surely, 2^18623987382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18623987382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25043074560).

18623987382 is an abundant number, since it is smaller than the sum of its proper divisors (31462161738).

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

18623987382 is a wasteful number, since it uses less digits than its factorization.

18623987382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678.

The product of its digits is 6967296, while the sum is 57.

The spelling of 18623987382 in words is "eighteen billion, six hundred twenty-three million, nine hundred eighty-seven thousand, three hundred eighty-two".