18442982 has 8 divisors (see below), whose sum is σ = 27737856. Its totient is φ = 9197032.

The previous prime is 18442969. The next prime is 18443003. The reversal of 18442982 is 28924481.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11273 + ... + 12804.

It is an arithmetic number, because the mean of its divisors is an integer number (3467232).

Almost surely, 2^18442982 is an apocalyptic number.

18442982 is a deficient number, since it is larger than the sum of its proper divisors (9294874).

18442982 is a wasteful number, since it uses less digits than its factorization.

18442982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24462.

The product of its digits is 36864, while the sum is 38.

The square root of 18442982 is about 4294.5293106463. The cubic root of 18442982 is about 264.2066315402.

The spelling of 18442982 in words is "eighteen million, four hundred forty-two thousand, nine hundred eighty-two".