11538817 has 2 divisors, whose sum is σ = 11538818. Its totient is φ = 11538816.

The previous prime is 11538811. The next prime is 11538853. The reversal of 11538817 is 71883511.

11538817 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9678321 + 1860496 = 3111^2 + 1364^2 .

It is a cyclic number.

It is not a de Polignac number, because 11538817 - 2¹⁹ = 11014529 is a prime.

It is not a weakly prime, because it can be changed into another prime (11538811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769408 + 5769409.

It is an arithmetic number, because the mean of its divisors is an integer number (5769409).

Almost surely, 2^11538817 is an apocalyptic number.

It is an amenable number.

11538817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11538817 is an equidigital number, since it uses as much as digits as its factorization.

11538817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 34.

The square root of 11538817 is about 3396.8834245526. The cubic root of 11538817 is about 225.9715486151.

The spelling of 11538817 in words is "eleven million, five hundred thirty-eight thousand, eight hundred seventeen".