518443213 has 2 divisors, whose sum is σ = 518443214. Its totient is φ = 518443212.

The previous prime is 518443199. The next prime is 518443231. The reversal of 518443213 is 312344815.

Together with next prime (518443231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466646404 + 51796809 = 21602^2 + 7197^2 .

It is a cyclic number.

It is not a de Polignac number, because 518443213 - 2⁵ = 518443181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518443243) 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 as a sum of consecutive naturals, namely, 259221606 + 259221607.

It is an arithmetic number, because the mean of its divisors is an integer number (259221607).

Almost surely, 2^518443213 is an apocalyptic number.

It is an amenable number.

518443213 is a deficient number, since it is larger than the sum of its proper divisors (1).

518443213 is an equidigital number, since it uses as much as digits as its factorization.

518443213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 518443213 is about 22769.3481022185. The cubic root of 518443213 is about 803.3418606251.

The spelling of 518443213 in words is "five hundred eighteen million, four hundred forty-three thousand, two hundred thirteen".