12018487 has 4 divisors (see below), whose sum is σ = 12943000. Its totient is φ = 11093976.

The previous prime is 12018481. The next prime is 12018491. The reversal of 12018487 is 78481021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12018487 - 2¹¹ = 12016439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018481) 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, 462237 + ... + 462262.

It is an arithmetic number, because the mean of its divisors is an integer number (3235750).

Almost surely, 2^12018487 is an apocalyptic number.

12018487 is a deficient number, since it is larger than the sum of its proper divisors (924513).

12018487 is an equidigital number, since it uses as much as digits as its factorization.

12018487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924512.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12018487 is about 3466.7689568242. The cubic root of 12018487 is about 229.0603566998.

The spelling of 12018487 in words is "twelve million, eighteen thousand, four hundred eighty-seven".