26194813 has 2 divisors, whose sum is σ = 26194814. Its totient is φ = 26194812.

The previous prime is 26194799. The next prime is 26194823. The reversal of 26194813 is 31849162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25989604 + 205209 = 5098^2 + 453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26194813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26194823) 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, 13097406 + 13097407.

It is an arithmetic number, because the mean of its divisors is an integer number (13097407).

Almost surely, 2^26194813 is an apocalyptic number.

It is an amenable number.

26194813 is a deficient number, since it is larger than the sum of its proper divisors (1).

26194813 is an equidigital number, since it uses as much as digits as its factorization.

26194813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 26194813 is about 5118.0868495953. The cubic root of 26194813 is about 296.9876802623.

The spelling of 26194813 in words is "twenty-six million, one hundred ninety-four thousand, eight hundred thirteen".