26189 has 2 divisors, whose sum is σ = 26190.
Its totient is φ = 26188.
The previous prime is 26183. The next prime is 26203. The reversal of 26189 is 98162.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 24964 + 1225 = 158^2 + 35^2
It is a cyclic number.
It is not a de Polignac number, because 26189 - 28 = 25933 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is equal to p2879 and since 26189 and 2879 have the same sum of digits, it is a Honaker prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (26183) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13094 + 13095.
It is an arithmetic number, because the mean of its divisors is an integer number (13095).
226189 is an apocalyptic number.
It is an amenable number.
26189 is a deficient number, since it is larger than the sum of its proper divisors (1).
26189 is an equidigital number, since it uses as much as digits as its factorization.
26189 is an evil number, because the sum of its binary digits is even.
The product of its digits is 864, while the sum is 26.
The square root of 26189 is about 161.8301578817.
The cubic root of 26189 is about 29.6965710046.
The spelling of 26189 in words is "twenty-six thousand, one hundred eighty-nine".