26113609 has 2 divisors, whose sum is σ = 26113610. Its totient is φ = 26113608.

The previous prime is 26113603. The next prime is 26113627. The reversal of 26113609 is 90631162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14417209 + 11696400 = 3797^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 26113609 - 2⁹ = 26113097 is a prime.

It is not a weakly prime, because it can be changed into another prime (26113603) 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 as a sum of consecutive naturals, namely, 13056804 + 13056805.

It is an arithmetic number, because the mean of its divisors is an integer number (13056805).

Almost surely, 2^26113609 is an apocalyptic number.

It is an amenable number.

26113609 is a deficient number, since it is larger than the sum of its proper divisors (1).

26113609 is an equidigital number, since it uses as much as digits as its factorization.

26113609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 26113609 is about 5110.1476495303. The cubic root of 26113609 is about 296.6804750267.

The spelling of 26113609 in words is "twenty-six million, one hundred thirteen thousand, six hundred nine".