18840108 has 54 divisors (see below), whose sum is σ = 51424716. Its totient is φ = 5352816.

The previous prime is 18840083. The next prime is 18840113. The reversal of 18840108 is 80104881.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 105163 + ... + 105341.

Almost surely, 2^18840108 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 18840108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25712358).

18840108 is an abundant number, since it is smaller than the sum of its proper divisors (32584608).

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

18840108 is a wasteful number, since it uses less digits than its factorization.

18840108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 18840108 is about 4340.5193237676. The cubic root of 18840108 is about 266.0895358791.

Adding to 18840108 its reverse (80104881), we get a palindrome (98944989).

The spelling of 18840108 in words is "eighteen million, eight hundred forty thousand, one hundred eight".