18412444 has 36 divisors (see below), whose sum is σ = 34948368. Its totient is φ = 8481600.

The previous prime is 18412439. The next prime is 18412447. The reversal of 18412444 is 44421481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412447) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 59049 + ... + 59359.

It is an arithmetic number, because the mean of its divisors is an integer number (970788).

Almost surely, 2^18412444 is an apocalyptic number.

It is an amenable number.

18412444 is a deficient number, since it is larger than the sum of its proper divisors (16535924).

18412444 is a wasteful number, since it uses less digits than its factorization.

18412444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 373 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

The square root of 18412444 is about 4290.9723839708. The cubic root of 18412444 is about 264.0607260061.

The spelling of 18412444 in words is "eighteen million, four hundred twelve thousand, four hundred forty-four".