13938217388 has 12 divisors (see below), whose sum is σ = 24392739840. Its totient is φ = 6968863152.

The previous prime is 13938217369. The next prime is 13938217393. The reversal of 13938217388 is 88371283931.

13938217388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 139058 + ... + 217286.

It is an arithmetic number, because the mean of its divisors is an integer number (2032728320).

Almost surely, 2^13938217388 is an apocalyptic number.

It is an amenable number.

13938217388 is a deficient number, since it is larger than the sum of its proper divisors (10454522452).

13938217388 is a wasteful number, since it uses less digits than its factorization.

13938217388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122776 (or 122774 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The spelling of 13938217388 in words is "thirteen billion, nine hundred thirty-eight million, two hundred seventeen thousand, three hundred eighty-eight".