11809383249 has 4 divisors (see below), whose sum is σ = 15745844336. Its totient is φ = 7872922164.

The previous prime is 11809383241. The next prime is 11809383259. The reversal of 11809383249 is 94238390811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11809383249 - 2³ = 11809383241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11809383198 and 11809383207.

It is not an unprimeable number, because it can be changed into a prime (11809383241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968230539 + ... + 1968230544.

It is an arithmetic number, because the mean of its divisors is an integer number (3936461084).

Almost surely, 2^11809383249 is an apocalyptic number.

It is an amenable number.

11809383249 is a deficient number, since it is larger than the sum of its proper divisors (3936461087).

11809383249 is an equidigital number, since it uses as much as digits as its factorization.

11809383249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936461086.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 11809383249 in words is "eleven billion, eight hundred nine million, three hundred eighty-three thousand, two hundred forty-nine".