5138406013 has 4 divisors (see below), whose sum is σ = 5533668028. Its totient is φ = 4743144000.

The previous prime is 5138406001. The next prime is 5138406047. The reversal of 5138406013 is 3106048315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2824603609 + 2313802404 = 53147^2 + 48102^2 .

It is a cyclic number.

It is not a de Polignac number, because 5138406013 - 2⁹ = 5138405501 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 (5138406313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197630988 + ... + 197631013.

It is an arithmetic number, because the mean of its divisors is an integer number (1383417007).

Almost surely, 2^5138406013 is an apocalyptic number.

It is an amenable number.

5138406013 is a deficient number, since it is larger than the sum of its proper divisors (395262015).

5138406013 is a wasteful number, since it uses less digits than its factorization.

5138406013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395262014.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 5138406013 is about 71682.6758219864. The cubic root of 5138406013 is about 1725.6106233388.

The spelling of 5138406013 in words is "five billion, one hundred thirty-eight million, four hundred six thousand, thirteen".