18383112 has 80 divisors (see below), whose sum is σ = 56192400. Its totient is φ = 5568480.

The previous prime is 18383081. The next prime is 18383119. The reversal of 18383112 is 21138381.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18383119) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5839 + ... + 8417.

It is an arithmetic number, because the mean of its divisors is an integer number (702405).

Almost surely, 2^18383112 is an apocalyptic number.

18383112 is a gapful number since it is divisible by the number (12) 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 18383112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28096200).

18383112 is an abundant number, since it is smaller than the sum of its proper divisors (37809288).

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

18383112 is a wasteful number, since it uses less digits than its factorization.

18383112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608 (or 2595 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 18383112 is about 4287.5531483586. The cubic root of 18383112 is about 263.9204305657.

It can be divided in two parts, 1838 and 3112, that added together give a triangular number (4950 = T₉₉).

The spelling of 18383112 in words is "eighteen million, three hundred eighty-three thousand, one hundred twelve".