13205387938 has 8 divisors (see below), whose sum is σ = 19808832960. Its totient is φ = 6602443620.

The previous prime is 13205387933. The next prime is 13205387963. The reversal of 13205387938 is 83978350231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13205387891 and 13205387900.

It is not an unprimeable number, because it can be changed into a prime (13205387933) 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, 50278 + ... + 170113.

It is an arithmetic number, because the mean of its divisors is an integer number (2476104120).

Almost surely, 2^13205387938 is an apocalyptic number.

13205387938 is a deficient number, since it is larger than the sum of its proper divisors (6603445022).

13205387938 is a wasteful number, since it uses less digits than its factorization.

13205387938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250352.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 13205387938 in words is "thirteen billion, two hundred five million, three hundred eighty-seven thousand, nine hundred thirty-eight".