18983603982 has 32 divisors (see below), whose sum is σ = 44790810624. Its totient is φ = 5248922400.

The previous prime is 18983603959. The next prime is 18983603993. The reversal of 18983603982 is 28930638981.

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 15 ways as a sum of consecutive naturals, for example, 7288869 + ... + 7291472.

It is an arithmetic number, because the mean of its divisors is an integer number (1399712832).

Almost surely, 2^18983603982 is an apocalyptic number.

18983603982 is an abundant number, since it is smaller than the sum of its proper divisors (25807206642).

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

18983603982 is a wasteful number, since it uses less digits than its factorization.

18983603982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14580384.

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 18983603982 in words is "eighteen billion, nine hundred eighty-three million, six hundred three thousand, nine hundred eighty-two".