13823837909 has 12 divisors (see below), whose sum is σ = 16228327500. Its totient is φ = 11740292928.

The previous prime is 13823837899. The next prime is 13823837987. The reversal of 13823837909 is 90973832831.

It can be written as a sum of positive squares in 2 ways, for example, as 4847222884 + 8976615025 = 69622^2 + 94745^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13823837909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13823837509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1288784 + ... + 1299465.

It is an arithmetic number, because the mean of its divisors is an integer number (1352360625).

Almost surely, 2^13823837909 is an apocalyptic number.

It is an amenable number.

13823837909 is a deficient number, since it is larger than the sum of its proper divisors (2404489591).

13823837909 is a wasteful number, since it uses less digits than its factorization.

13823837909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588372 (or 2588365 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 13823837909 in words is "thirteen billion, eight hundred twenty-three million, eight hundred thirty-seven thousand, nine hundred nine".