18904116 has 96 divisors (see below), whose sum is σ = 56448000. Its totient is φ = 4780800.

The previous prime is 18904111. The next prime is 18904159. The reversal of 18904116 is 61140981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18904111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37635 + ... + 38133.

It is an arithmetic number, because the mean of its divisors is an integer number (588000).

Almost surely, 2^18904116 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 18904116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28224000).

18904116 is an abundant number, since it is smaller than the sum of its proper divisors (37543884).

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

18904116 is a wasteful number, since it uses less digits than its factorization.

18904116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 18904116 is about 4347.8863830602. The cubic root of 18904116 is about 266.3905356953.

It can be divided in two parts, 1890 and 4116, that added together give a palindrome (6006).

The spelling of 18904116 in words is "eighteen million, nine hundred four thousand, one hundred sixteen".