518865117 has 8 divisors (see below), whose sum is σ = 693316224. Its totient is φ = 345162048.

The previous prime is 518865107. The next prime is 518865161. The reversal of 518865117 is 711568815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 518865117 - 2¹⁶ = 518799581 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518865107) 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 7 ways as a sum of consecutive naturals, for example, 185388 + ... + 188165.

It is an arithmetic number, because the mean of its divisors is an integer number (86664528).

Almost surely, 2^518865117 is an apocalyptic number.

It is an amenable number.

518865117 is a deficient number, since it is larger than the sum of its proper divisors (174451107).

518865117 is a wasteful number, since it uses less digits than its factorization.

518865117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374019.

The product of its digits is 67200, while the sum is 42.

The square root of 518865117 is about 22778.6109541385. The cubic root of 518865117 is about 803.5597187802.

The spelling of 518865117 in words is "five hundred eighteen million, eight hundred sixty-five thousand, one hundred seventeen".