13138518628 has 12 divisors (see below), whose sum is σ = 23018511852. Its totient is φ = 6561800960.

The previous prime is 13138518623. The next prime is 13138518637. The reversal of 13138518628 is 82681583131.

13138518628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4504020544 + 8634498084 = 67112^2 + 92922^2 .

It is not an unprimeable number, because it can be changed into a prime (13138518623) by changing a digit.

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, 1860625 + ... + 1867672.

It is an arithmetic number, because the mean of its divisors is an integer number (1918209321).

Almost surely, 2^13138518628 is an apocalyptic number.

It is an amenable number.

13138518628 is a deficient number, since it is larger than the sum of its proper divisors (9879993224).

13138518628 is a wasteful number, since it uses less digits than its factorization.

13138518628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729182 (or 3729180 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The spelling of 13138518628 in words is "thirteen billion, one hundred thirty-eight million, five hundred eighteen thousand, six hundred twenty-eight".