18071108 has 18 divisors (see below), whose sum is σ = 34761678. Its totient is φ = 8213920.

The previous prime is 18071107. The next prime is 18071111. The reversal of 18071108 is 80117081.

It can be written as a sum of positive squares in only one way, i.e., 16386304 + 1684804 = 4048^2 + 1298^2 .

It is not an unprimeable number, because it can be changed into a prime (18071107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18185 + ... + 19152.

Almost surely, 2^18071108 is an apocalyptic number.

It is an amenable number.

18071108 is a deficient number, since it is larger than the sum of its proper divisors (16690570).

18071108 is a wasteful number, since it uses less digits than its factorization.

18071108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37363 (or 37350 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 18071108 is about 4251.0125852554. The cubic root of 18071108 is about 262.4187890881.

Adding to 18071108 its reverse (80117081), we get a palindrome (98188189).

The spelling of 18071108 in words is "eighteen million, seventy-one thousand, one hundred eight".