18378789128382 has 16 divisors (see below), whose sum is σ = 38919788742672. Its totient is φ = 5765894628480.

The previous prime is 18378789128369. The next prime is 18378789128383. The reversal of 18378789128382 is 28382198787381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18378789128383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90092103469 + ... + 90092103672.

It is an arithmetic number, because the mean of its divisors is an integer number (2432486796417).

Almost surely, 2^{18378789128382} is an apocalyptic number.

18378789128382 is an abundant number, since it is smaller than the sum of its proper divisors (20540999614290).

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

18378789128382 is a wasteful number, since it uses less digits than its factorization.

18378789128382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180184207163.

The product of its digits is 520224768, while the sum is 75.

The spelling of 18378789128382 in words is "eighteen trillion, three hundred seventy-eight billion, seven hundred eighty-nine million, one hundred twenty-eight thousand, three hundred eighty-two".