18318104 has 32 divisors (see below), whose sum is σ = 39626400. Its totient is φ = 7776000.

The previous prime is 18318101. The next prime is 18318119. The reversal of 18318104 is 40181381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18318101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4604 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (1238325).

Almost surely, 2^18318104 is an apocalyptic number.

18318104 is a gapful number since it is divisible by the number (14) 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 18318104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19813200).

18318104 is an abundant number, since it is smaller than the sum of its proper divisors (21308296).

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

18318104 is a wasteful number, since it uses less digits than its factorization.

18318104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123 (or 3119 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 18318104 is about 4279.9654204211. The cubic root of 18318104 is about 263.6089634767.

Adding to 18318104 its reverse (40181381), we get a palindrome (58499485).

The spelling of 18318104 in words is "eighteen million, three hundred eighteen thousand, one hundred four".