26191853 has 2 divisors, whose sum is σ = 26191854. Its totient is φ = 26191852.

The previous prime is 26191813. The next prime is 26191873. The reversal of 26191853 is 35819162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25786084 + 405769 = 5078^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 26191853 - 2¹⁴ = 26175469 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 (26191813) 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, 13095926 + 13095927.

It is an arithmetic number, because the mean of its divisors is an integer number (13095927).

Almost surely, 2^26191853 is an apocalyptic number.

It is an amenable number.

26191853 is a deficient number, since it is larger than the sum of its proper divisors (1).

26191853 is an equidigital number, since it uses as much as digits as its factorization.

26191853 is an odious number, because the sum of its binary digits is odd.

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

The square root of 26191853 is about 5117.7976708737. The cubic root of 26191853 is about 296.9764933574.

The spelling of 26191853 in words is "twenty-six million, one hundred ninety-one thousand, eight hundred fifty-three".