11830509 has 16 divisors (see below), whose sum is σ = 17955840. Its totient is φ = 7693920.

The previous prime is 11830459. The next prime is 11830513. The reversal of 11830509 is 90503811.

11830509 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11830509 - 2⁸ = 11830253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11830409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4237 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (1122240).

Almost surely, 2^11830509 is an apocalyptic number.

It is an amenable number.

11830509 is a deficient number, since it is larger than the sum of its proper divisors (6125331).

11830509 is a wasteful number, since it uses less digits than its factorization.

11830509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737 (or 10731 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 11830509 is about 3439.5506974022. The cubic root of 11830509 is about 227.8598515435.

The spelling of 11830509 in words is "eleven million, eight hundred thirty thousand, five hundred nine".