26144189 has 2 divisors, whose sum is σ = 26144190. Its totient is φ = 26144188.

The previous prime is 26144179. The next prime is 26144201. The reversal of 26144189 is 98144162.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23600164 + 2544025 = 4858^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 26144189 - 2²⁰ = 25095613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26144159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13072094 + 13072095.

It is an arithmetic number, because the mean of its divisors is an integer number (13072095).

Almost surely, 2^26144189 is an apocalyptic number.

It is an amenable number.

26144189 is a deficient number, since it is larger than the sum of its proper divisors (1).

26144189 is an equidigital number, since it uses as much as digits as its factorization.

26144189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 26144189 is about 5113.1388598394. The cubic root of 26144189 is about 296.7962377799.

The spelling of 26144189 in words is "twenty-six million, one hundred forty-four thousand, one hundred eighty-nine".