18741144 has 64 divisors (see below), whose sum is σ = 50083200. Its totient is φ = 5826816.

The previous prime is 18741139. The next prime is 18741161. The reversal of 18741144 is 44114781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33007 + ... + 33569.

It is an arithmetic number, because the mean of its divisors is an integer number (782550).

Almost surely, 2^18741144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18741144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25041600).

18741144 is an abundant number, since it is smaller than the sum of its proper divisors (31342056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18741144 is a wasteful number, since it uses less digits than its factorization.

18741144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 660 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 18741144 is about 4329.1042953479. The cubic root of 18741144 is about 265.6228094675.

The spelling of 18741144 in words is "eighteen million, seven hundred forty-one thousand, one hundred forty-four".