12611189 has 2 divisors, whose sum is σ = 12611190. Its totient is φ = 12611188.

The previous prime is 12611177. The next prime is 12611197. The reversal of 12611189 is 98111621.

12611189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9872164 + 2739025 = 3142^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 12611189 - 2⁴ = 12611173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12611089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305594 + 6305595.

It is an arithmetic number, because the mean of its divisors is an integer number (6305595).

Almost surely, 2^12611189 is an apocalyptic number.

It is an amenable number.

12611189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611189 is an equidigital number, since it uses as much as digits as its factorization.

12611189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 29.

The square root of 12611189 is about 3551.2235919469. The cubic root of 12611189 is about 232.7655362141.

The spelling of 12611189 in words is "twelve million, six hundred eleven thousand, one hundred eighty-nine".