18059844 has 96 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 5152000.

The previous prime is 18059827. The next prime is 18059849. The reversal of 18059844 is 44895081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18059849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254329 + ... + 254399.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^18059844 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 18059844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24385536).

18059844 is an abundant number, since it is smaller than the sum of its proper divisors (30711228).

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

18059844 is a wasteful number, since it uses less digits than its factorization.

18059844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 18059844 is about 4249.6875179241. The cubic root of 18059844 is about 262.3642545312.

The spelling of 18059844 in words is "eighteen million, fifty-nine thousand, eight hundred forty-four".