13818447249 has 16 divisors (see below), whose sum is σ = 19067209920. Its totient is φ = 8891234240.

The previous prime is 13818447241. The next prime is 13818447283. The reversal of 13818447249 is 94274481831.

13818447249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13818447249 - 2³ = 13818447241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13818447241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209494 + ... + 267440.

It is an arithmetic number, because the mean of its divisors is an integer number (1191700620).

Almost surely, 2^13818447249 is an apocalyptic number.

It is an amenable number.

13818447249 is a deficient number, since it is larger than the sum of its proper divisors (5248762671).

13818447249 is a wasteful number, since it uses less digits than its factorization.

13818447249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60720.

The product of its digits is 1548288, while the sum is 51.

The spelling of 13818447249 in words is "thirteen billion, eight hundred eighteen million, four hundred forty-seven thousand, two hundred forty-nine".