12018187 has 2 divisors, whose sum is σ = 12018188. Its totient is φ = 12018186.

The previous prime is 12018169. The next prime is 12018211. The reversal of 12018187 is 78181021.

12018187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (78181021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12018187 - 2⁷ = 12018059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12018107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009093 + 6009094.

It is an arithmetic number, because the mean of its divisors is an integer number (6009094).

Almost surely, 2^12018187 is an apocalyptic number.

12018187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12018187 is an equidigital number, since it uses as much as digits as its factorization.

12018187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 12018187 is about 3466.7256886001. The cubic root of 12018187 is about 229.0584507839.

The spelling of 12018187 in words is "twelve million, eighteen thousand, one hundred eighty-seven".