18872108 has 12 divisors (see below), whose sum is σ = 34969032. Its totient is φ = 8880960.

The previous prime is 18872093. The next prime is 18872123. The reversal of 18872108 is 80127881.

It is an interprime number because it is at equal distance from previous prime (18872093) and next prime (18872123).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138698 + ... + 138833.

It is an arithmetic number, because the mean of its divisors is an integer number (2914086).

Almost surely, 2^18872108 is an apocalyptic number.

It is an amenable number.

18872108 is a deficient number, since it is larger than the sum of its proper divisors (16096924).

18872108 is a wasteful number, since it uses less digits than its factorization.

18872108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277552 (or 277550 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 18872108 is about 4344.2039546964. The cubic root of 18872108 is about 266.2401020515.

Adding to 18872108 its reverse (80127881), we get a palindrome (98999989).

The spelling of 18872108 in words is "eighteen million, eight hundred seventy-two thousand, one hundred eight".