12018653 has 2 divisors, whose sum is σ = 12018654. Its totient is φ = 12018652.

The previous prime is 12018641. The next prime is 12018679. The reversal of 12018653 is 35681021.

It is an a-pointer prime, because the next prime (12018679) can be obtained adding 12018653 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11580409 + 438244 = 3403^2 + 662^2 .

It is an emirp because it is prime and its reverse (35681021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12018653 - 2⁴ = 12018637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12018613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009326 + 6009327.

It is an arithmetic number, because the mean of its divisors is an integer number (6009327).

Almost surely, 2^12018653 is an apocalyptic number.

It is an amenable number.

12018653 is a deficient number, since it is larger than the sum of its proper divisors (1).

12018653 is an equidigital number, since it uses as much as digits as its factorization.

12018653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12018653 is about 3466.7928983428. The cubic root of 12018653 is about 229.0614112930.

Adding to 12018653 its reverse (35681021), we get a palindrome (47699674).

The spelling of 12018653 in words is "twelve million, eighteen thousand, six hundred fifty-three".