18116982 has 48 divisors (see below), whose sum is σ = 42653520. Its totient is φ = 5524416.

The previous prime is 18116977. The next prime is 18117023. The reversal of 18116982 is 28961181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32248 + ... + 32804.

It is an arithmetic number, because the mean of its divisors is an integer number (888615).

Almost surely, 2^18116982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18116982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21326760).

18116982 is an abundant number, since it is smaller than the sum of its proper divisors (24536538).

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

18116982 is a wasteful number, since it uses less digits than its factorization.

18116982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 714 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 18116982 is about 4256.4048209727. The cubic root of 18116982 is about 262.6406538725.

The spelling of 18116982 in words is "eighteen million, one hundred sixteen thousand, nine hundred eighty-two".