18867116 has 12 divisors (see below), whose sum is σ = 33720288. Its totient is φ = 9232752.

The previous prime is 18867113. The next prime is 18867131. The reversal of 18867116 is 61176881.

It is a self number, because there is not a number n which added to its sum of digits gives 18867116.

It is not an unprimeable number, because it can be changed into a prime (18867113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49991 + ... + 50366.

It is an arithmetic number, because the mean of its divisors is an integer number (2810024).

Almost surely, 2^18867116 is an apocalyptic number.

It is an amenable number.

18867116 is a deficient number, since it is larger than the sum of its proper divisors (14853172).

18867116 is a wasteful number, since it uses less digits than its factorization.

18867116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100408 (or 100406 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 18867116 is about 4343.6293580369. The cubic root of 18867116 is about 266.2166249392.

The spelling of 18867116 in words is "eighteen million, eight hundred sixty-seven thousand, one hundred sixteen".