11905189 has 2 divisors, whose sum is σ = 11905190. Its totient is φ = 11905188.

The previous prime is 11905171. The next prime is 11905193. The reversal of 11905189 is 98150911.

11905189 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., 7317025 + 4588164 = 2705^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 11905189 - 2¹⁷ = 11774117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11905139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5952594 + 5952595.

It is an arithmetic number, because the mean of its divisors is an integer number (5952595).

Almost surely, 2^11905189 is an apocalyptic number.

It is an amenable number.

11905189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11905189 is an equidigital number, since it uses as much as digits as its factorization.

11905189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 11905189 is about 3450.3896881367. The cubic root of 11905189 is about 228.3383007545.

The spelling of 11905189 in words is "eleven million, nine hundred five thousand, one hundred eighty-nine".