26040191 has 2 divisors, whose sum is σ = 26040192. Its totient is φ = 26040190.

The previous prime is 26040169. The next prime is 26040197. The reversal of 26040191 is 19104062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26040191 - 2¹⁸ = 25778047 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 (26040197) 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, 13020095 + 13020096.

It is an arithmetic number, because the mean of its divisors is an integer number (13020096).

Almost surely, 2^26040191 is an apocalyptic number.

26040191 is a deficient number, since it is larger than the sum of its proper divisors (1).

26040191 is an equidigital number, since it uses as much as digits as its factorization.

26040191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 26040191 is about 5102.9590435354. The cubic root of 26040191 is about 296.4021765603.

The spelling of 26040191 in words is "twenty-six million, forty thousand, one hundred ninety-one".