18378633982 has 8 divisors (see below), whose sum is σ = 27569702016. Its totient is φ = 9188733312.

The previous prime is 18378633979. The next prime is 18378634003. The reversal of 18378633982 is 28933687381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251358 + ... + 316129.

It is an arithmetic number, because the mean of its divisors is an integer number (3446212752).

Almost surely, 2^18378633982 is an apocalyptic number.

18378633982 is a deficient number, since it is larger than the sum of its proper divisors (9191068034).

18378633982 is a wasteful number, since it uses less digits than its factorization.

18378633982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583682.

The product of its digits is 10450944, while the sum is 58.

The spelling of 18378633982 in words is "eighteen billion, three hundred seventy-eight million, six hundred thirty-three thousand, nine hundred eighty-two".