518117013 has 16 divisors (see below), whose sum is σ = 767931840. Its totient is φ = 345253392.

The previous prime is 518117011. The next prime is 518117059. The reversal of 518117013 is 310711815.

It is not a de Polignac number, because 518117013 - 2¹ = 518117011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518117011) 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 15 ways as a sum of consecutive naturals, for example, 109270 + ... + 113912.

It is an arithmetic number, because the mean of its divisors is an integer number (47995740).

Almost surely, 2^518117013 is an apocalyptic number.

It is an amenable number.

518117013 is a deficient number, since it is larger than the sum of its proper divisors (249814827).

518117013 is a wasteful number, since it uses less digits than its factorization.

518117013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8785 (or 8779 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 518117013 is about 22762.1838363545. The cubic root of 518117013 is about 803.1733400186.

Adding to 518117013 its reverse (310711815), we get a palindrome (828828828).

The spelling of 518117013 in words is "five hundred eighteen million, one hundred seventeen thousand, thirteen".