5138386565 has 16 divisors (see below), whose sum is σ = 6647937408. Its totient is φ = 3790180416.

The previous prime is 5138386469. The next prime is 5138386571. The reversal of 5138386565 is 5656838315.

It is a cyclic number.

It is not a de Polignac number, because 5138386565 - 2¹⁶ = 5138321029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13094 + ... + 102216.

It is an arithmetic number, because the mean of its divisors is an integer number (415496088).

Almost surely, 2^5138386565 is an apocalyptic number.

It is an amenable number.

5138386565 is a deficient number, since it is larger than the sum of its proper divisors (1509550843).

5138386565 is a wasteful number, since it uses less digits than its factorization.

5138386565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90028.

The product of its digits is 2592000, while the sum is 50.

The square root of 5138386565 is about 71682.5401684399. The cubic root of 5138386565 is about 1725.6084462877.

The spelling of 5138386565 in words is "five billion, one hundred thirty-eight million, three hundred eighty-six thousand, five hundred sixty-five".