13138543 has 12 divisors (see below), whose sum is σ = 15072624. Its totient is φ = 11422400.

The previous prime is 13138529. The next prime is 13138561. The reversal of 13138543 is 34583131.

13138543 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13138543 - 2⁵ = 13138511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (1256052).

Almost surely, 2^13138543 is an apocalyptic number.

13138543 is a deficient number, since it is larger than the sum of its proper divisors (1934081).

13138543 is a wasteful number, since it uses less digits than its factorization.

13138543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766 (or 4755 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 13138543 is about 3624.7128162104. The cubic root of 13138543 is about 235.9658034814.

The spelling of 13138543 in words is "thirteen million, one hundred thirty-eight thousand, five hundred forty-three".