18466442 has 8 divisors (see below), whose sum is σ = 29157600. Its totient is φ = 8747244.

The previous prime is 18466439. The next prime is 18466457. The reversal of 18466442 is 24466481.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242942 + ... + 243017.

It is an arithmetic number, because the mean of its divisors is an integer number (3644700).

Almost surely, 2^18466442 is an apocalyptic number.

18466442 is a deficient number, since it is larger than the sum of its proper divisors (10691158).

18466442 is a wasteful number, since it uses less digits than its factorization.

18466442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485980.

The product of its digits is 36864, while the sum is 35.

The square root of 18466442 is about 4297.2598245859. The cubic root of 18466442 is about 264.3186102014.

The spelling of 18466442 in words is "eighteen million, four hundred sixty-six thousand, four hundred forty-two".