18357144 has 64 divisors (see below), whose sum is σ = 52345440. Its totient is φ = 5314560.

The previous prime is 18357113. The next prime is 18357149. The reversal of 18357144 is 44175381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18357149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3574 + ... + 7034.

Almost surely, 2^18357144 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 18357144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26172720).

18357144 is an abundant number, since it is smaller than the sum of its proper divisors (33988296).

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

18357144 is a wasteful number, since it uses less digits than its factorization.

18357144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500 (or 3496 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 18357144 is about 4284.5237775043. The cubic root of 18357144 is about 263.7961005945.

The spelling of 18357144 in words is "eighteen million, three hundred fifty-seven thousand, one hundred forty-four".