26135189 has 4 divisors (see below), whose sum is σ = 26145900. Its totient is φ = 26124480.

The previous prime is 26135173. The next prime is 26135237. The reversal of 26135189 is 98153162.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98153162 = 2 ⋅49076581.

It can be written as a sum of positive squares in 2 ways, for example, as 17783089 + 8352100 = 4217^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 26135189 - 2⁴ = 26135173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26135129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287 + ... + 7235.

It is an arithmetic number, because the mean of its divisors is an integer number (6536475).

Almost surely, 2^26135189 is an apocalyptic number.

It is an amenable number.

26135189 is a deficient number, since it is larger than the sum of its proper divisors (10711).

26135189 is an equidigital number, since it uses as much as digits as its factorization.

26135189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10710.

The product of its digits is 12960, while the sum is 35.

The square root of 26135189 is about 5112.2586984620. The cubic root of 26135189 is about 296.7621770216.

The spelling of 26135189 in words is "twenty-six million, one hundred thirty-five thousand, one hundred eighty-nine".