18359484 has 72 divisors (see below), whose sum is σ = 50666112. Its totient is φ = 5129280.

The previous prime is 18359483. The next prime is 18359527. The reversal of 18359484 is 48495381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18359483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21897 + ... + 22719.

It is an arithmetic number, because the mean of its divisors is an integer number (703696).

Almost surely, 2^18359484 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 18359484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25333056).

18359484 is an abundant number, since it is smaller than the sum of its proper divisors (32306628).

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

18359484 is a wasteful number, since it uses less digits than its factorization.

18359484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 852 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 18359484 is about 4284.7968446590. The cubic root of 18359484 is about 263.8073088857.

The spelling of 18359484 in words is "eighteen million, three hundred fifty-nine thousand, four hundred eighty-four".