13138788338 has 16 divisors (see below), whose sum is σ = 21330859200. Its totient is φ = 6033581136.

The previous prime is 13138788337. The next prime is 13138788359. The reversal of 13138788338 is 83388783131.

It is a self number, because there is not a number n which added to its sum of digits gives 13138788338.

It is not an unprimeable number, because it can be changed into a prime (13138788337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264520 + ... + 1274867.

It is an arithmetic number, because the mean of its divisors is an integer number (1333178700).

Almost surely, 2^13138788338 is an apocalyptic number.

13138788338 is a deficient number, since it is larger than the sum of its proper divisors (8192070862).

13138788338 is a wasteful number, since it uses less digits than its factorization.

13138788338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539601.

The product of its digits is 2322432, while the sum is 53.

The spelling of 13138788338 in words is "thirteen billion, one hundred thirty-eight million, seven hundred eighty-eight thousand, three hundred thirty-eight".