18133016 has 96 divisors (see below), whose sum is σ = 42439680. Its totient is φ = 7180800.

The previous prime is 18133009. The next prime is 18133019. The reversal of 18133016 is 61033181.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 18132982 and 18133000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133019) 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, 584921 + ... + 584951.

It is an arithmetic number, because the mean of its divisors is an integer number (442080).

Almost surely, 2^18133016 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 18133016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21219840).

18133016 is an abundant number, since it is smaller than the sum of its proper divisors (24306664).

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

18133016 is a wasteful number, since it uses less digits than its factorization.

18133016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 18133016 is about 4258.2879188707. The cubic root of 18133016 is about 262.7181122946.

Adding to 18133016 its reverse (61033181), we get a palindrome (79166197).

The spelling of 18133016 in words is "eighteen million, one hundred thirty-three thousand, sixteen".