18434108 has 36 divisors (see below), whose sum is σ = 40532016. Its totient is φ = 7180800.

The previous prime is 18434107. The next prime is 18434113. The reversal of 18434108 is 80143481.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668 + ... + 6108.

Almost surely, 2^18434108 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 18434108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20266008).

18434108 is an abundant number, since it is smaller than the sum of its proper divisors (22097908).

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

18434108 is a wasteful number, since it uses less digits than its factorization.

18434108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474 (or 5461 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 18434108 is about 4293.4960114107. The cubic root of 18434108 is about 264.1642496415.

Adding to 18434108 its reverse (80143481), we get a palindrome (98577589).

The spelling of 18434108 in words is "eighteen million, four hundred thirty-four thousand, one hundred eight".