13188238838 has 16 divisors (see below), whose sum is σ = 20164181856. Its totient is φ = 6467843520.

The previous prime is 13188238831. The next prime is 13188238841. The reversal of 13188238838 is 83883288131.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 13188238838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13188238831) 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, 223106 + ... + 275957.

It is an arithmetic number, because the mean of its divisors is an integer number (1260261366).

Almost surely, 2^13188238838 is an apocalyptic number.

13188238838 is a deficient number, since it is larger than the sum of its proper divisors (6975943018).

13188238838 is a wasteful number, since it uses less digits than its factorization.

13188238838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499319.

The product of its digits is 1769472, while the sum is 53.

The spelling of 13188238838 in words is "thirteen billion, one hundred eighty-eight million, two hundred thirty-eight thousand, eight hundred thirty-eight".