13844647838 has 16 divisors (see below), whose sum is σ = 24019632000. Its totient is φ = 5861933016.

The previous prime is 13844647829. The next prime is 13844647841. The reversal of 13844647838 is 83874644831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5956088 + ... + 5958411.

It is an arithmetic number, because the mean of its divisors is an integer number (1501227000).

Almost surely, 2^13844647838 is an apocalyptic number.

13844647838 is a deficient number, since it is larger than the sum of its proper divisors (10174984162).

13844647838 is a wasteful number, since it uses less digits than its factorization.

13844647838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914591.

The product of its digits is 12386304, while the sum is 56.

The spelling of 13844647838 in words is "thirteen billion, eight hundred forty-four million, six hundred forty-seven thousand, eight hundred thirty-eight".