18331122382 has 16 divisors (see below), whose sum is σ = 27538855632. Its totient is φ = 9151517440.

The previous prime is 18331122379. The next prime is 18331122409. The reversal of 18331122382 is 28322113381.

It is a super-2 number, since 2×18331122382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5066238 + ... + 5069854.

It is an arithmetic number, because the mean of its divisors is an integer number (1721178477).

Almost surely, 2^18331122382 is an apocalyptic number.

18331122382 is a deficient number, since it is larger than the sum of its proper divisors (9207733250).

18331122382 is a wasteful number, since it uses less digits than its factorization.

18331122382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803.

The product of its digits is 13824, while the sum is 34.

Subtracting 18331122382 from its reverse (28322113381), we obtain a palindrome (9990990999).

The spelling of 18331122382 in words is "eighteen billion, three hundred thirty-one million, one hundred twenty-two thousand, three hundred eighty-two".