11834509 has 2 divisors, whose sum is σ = 11834510. Its totient is φ = 11834508.

The previous prime is 11834479. The next prime is 11834513. The reversal of 11834509 is 90543811.

11834509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7038409 + 4796100 = 2653^2 + 2190^2 .

It is an emirp because it is prime and its reverse (90543811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11834509 - 2⁵ = 11834477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11834519) 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, 5917254 + 5917255.

It is an arithmetic number, because the mean of its divisors is an integer number (5917255).

Almost surely, 2^11834509 is an apocalyptic number.

It is an amenable number.

11834509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11834509 is an equidigital number, since it uses as much as digits as its factorization.

11834509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 11834509 is about 3440.1321195559. The cubic root of 11834509 is about 227.8855291285.

The spelling of 11834509 in words is "eleven million, eight hundred thirty-four thousand, five hundred nine".