18143064 has 48 divisors (see below), whose sum is σ = 49884120. Its totient is φ = 5955840.

The previous prime is 18143051. The next prime is 18143071. The reversal of 18143064 is 46034181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2944 + ... + 6704.

Almost surely, 2^18143064 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 18143064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24942060).

18143064 is an abundant number, since it is smaller than the sum of its proper divisors (31741056).

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

18143064 is a wasteful number, since it uses less digits than its factorization.

18143064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 18143064 is about 4259.4675723616. The cubic root of 18143064 is about 262.7666297641.

The spelling of 18143064 in words is "eighteen million, one hundred forty-three thousand, sixty-four".