12018005 has 8 divisors (see below), whose sum is σ = 14666400. Its totient is φ = 9451216.

The previous prime is 12018001. The next prime is 12018011. The reversal of 12018005 is 50081021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12018005 - 2² = 12018001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20075 + ... + 20664.

It is an arithmetic number, because the mean of its divisors is an integer number (1833300).

Almost surely, 2^12018005 is an apocalyptic number.

It is an amenable number.

12018005 is a deficient number, since it is larger than the sum of its proper divisors (2648395).

12018005 is an equidigital number, since it uses as much as digits as its factorization.

12018005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40803.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 12018005 is about 3466.6994389477. The cubic root of 12018005 is about 229.0572945127.

Adding to 12018005 its reverse (50081021), we get a palindrome (62099026).

The spelling of 12018005 in words is "twelve million, eighteen thousand, five".