12018613 has 2 divisors, whose sum is σ = 12018614. Its totient is φ = 12018612.

The previous prime is 12018577. The next prime is 12018623. The reversal of 12018613 is 31681021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11992369 + 26244 = 3463^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 12018613 - 2⁹ = 12018101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12018623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009306 + 6009307.

It is an arithmetic number, because the mean of its divisors is an integer number (6009307).

Almost surely, 2^12018613 is an apocalyptic number.

It is an amenable number.

12018613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12018613 is an equidigital number, since it uses as much as digits as its factorization.

12018613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 12018613 is about 3466.7871293173. The cubic root of 12018613 is about 229.0611571751.

Adding to 12018613 its reverse (31681021), we get a palindrome (43699634).

The spelling of 12018613 in words is "twelve million, eighteen thousand, six hundred thirteen".