518266313 has 8 divisors (see below), whose sum is σ = 525142440. Its totient is φ = 511413760.

The previous prime is 518266303. The next prime is 518266349. The reversal of 518266313 is 313662815.

It can be written as a sum of positive squares in 4 ways, for example, as 53993104 + 464273209 = 7348^2 + 21547^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 518266313 - 2¹⁶ = 518200777 is a prime.

It is a super-2 number, since 2×518266313² = 537199942381227938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518266303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40781 + ... + 51957.

It is an arithmetic number, because the mean of its divisors is an integer number (65642805).

Almost surely, 2^518266313 is an apocalyptic number.

It is an amenable number.

518266313 is a deficient number, since it is larger than the sum of its proper divisors (6876127).

518266313 is a wasteful number, since it uses less digits than its factorization.

518266313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11787.

The product of its digits is 25920, while the sum is 35.

The square root of 518266313 is about 22765.4631624309. The cubic root of 518266313 is about 803.2504797769.

The spelling of 518266313 in words is "five hundred eighteen million, two hundred sixty-six thousand, three hundred thirteen".