13138663903 has 4 divisors (see below), whose sum is σ = 13212064440. Its totient is φ = 13065263368.

The previous prime is 13138663861. The next prime is 13138663931. The reversal of 13138663903 is 30936683131.

13138663903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13138663903 - 2¹⁷ = 13138532831 is a prime.

It is a super-3 number, since 3×13138663903³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13138663903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138663943) 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, 36700000 + ... + 36700357.

It is an arithmetic number, because the mean of its divisors is an integer number (3303016110).

Almost surely, 2^13138663903 is an apocalyptic number.

13138663903 is a deficient number, since it is larger than the sum of its proper divisors (73400537).

13138663903 is an equidigital number, since it uses as much as digits as its factorization.

13138663903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73400536.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 13138663903 in words is "thirteen billion, one hundred thirty-eight million, six hundred sixty-three thousand, nine hundred three".