18383838382 has 64 divisors (see below), whose sum is σ = 34899314688. Its totient is φ = 7068384000.

The previous prime is 18383838353. The next prime is 18383838409. The reversal of 18383838382 is 28383838381.

It is a congruent number.

It is an unprimeable number.

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, 2017657 + ... + 2026747.

It is an arithmetic number, because the mean of its divisors is an integer number (545301792).

Almost surely, 2^18383838382 is an apocalyptic number.

18383838382 is a deficient number, since it is larger than the sum of its proper divisors (16515476306).

18383838382 is a wasteful number, since it uses less digits than its factorization.

18383838382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9425.

The product of its digits is 5308416, while the sum is 55.

Subtracting 18383838382 from its reverse (28383838381), we obtain a palindrome (9999999999).

The spelling of 18383838382 in words is "eighteen billion, three hundred eighty-three million, eight hundred thirty-eight thousand, three hundred eighty-two".