18383800 has 48 divisors (see below), whose sum is σ = 45264960. Its totient is φ = 6919680.

The previous prime is 18383759. The next prime is 18383801. The reversal of 18383800 is 838381.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18383801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 697 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (943020).

Almost surely, 2^18383800 is an apocalyptic number.

18383800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18383800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22632480).

18383800 is an abundant number, since it is smaller than the sum of its proper divisors (26881160).

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

18383800 is a wasteful number, since it uses less digits than its factorization.

18383800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440 (or 5431 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18383800 is about 4287.6333798495. The cubic root of 18383800 is about 263.9237229896.

The spelling of 18383800 in words is "eighteen million, three hundred eighty-three thousand, eight hundred".