11849813 has 2 divisors, whose sum is σ = 11849814. Its totient is φ = 11849812.

The previous prime is 11849801. The next prime is 11849869. The reversal of 11849813 is 31894811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 2951524 = 2983^2 + 1718^2 .

It is a cyclic number.

It is not a de Polignac number, because 11849813 - 2⁸ = 11849557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11849413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5924906 + 5924907.

It is an arithmetic number, because the mean of its divisors is an integer number (5924907).

Almost surely, 2^11849813 is an apocalyptic number.

It is an amenable number.

11849813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11849813 is an equidigital number, since it uses as much as digits as its factorization.

11849813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 35.

The square root of 11849813 is about 3442.3557340868. The cubic root of 11849813 is about 227.9837181869.

The spelling of 11849813 in words is "eleven million, eight hundred forty-nine thousand, eight hundred thirteen".