18244474 has 8 divisors (see below), whose sum is σ = 28556640. Its totient is φ = 8725596.

The previous prime is 18244469. The next prime is 18244531. The reversal of 18244474 is 47444281.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198264 + ... + 198355.

It is an arithmetic number, because the mean of its divisors is an integer number (3569580).

Almost surely, 2^18244474 is an apocalyptic number.

18244474 is a deficient number, since it is larger than the sum of its proper divisors (10312166).

18244474 is a wasteful number, since it uses less digits than its factorization.

18244474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396644.

The product of its digits is 28672, while the sum is 34.

The square root of 18244474 is about 4271.3550543124. The cubic root of 18244474 is about 263.2552952900.

The spelling of 18244474 in words is "eighteen million, two hundred forty-four thousand, four hundred seventy-four".