518534873 has 2 divisors, whose sum is σ = 518534874. Its totient is φ = 518534872.

The previous prime is 518534827. The next prime is 518534899. The reversal of 518534873 is 378435815.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507691024 + 10843849 = 22532^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 518534873 - 2⁸ = 518534617 is a prime.

It is a super-2 number, since 2×518534873² = 537756829034252258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (518534813) 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, 259267436 + 259267437.

It is an arithmetic number, because the mean of its divisors is an integer number (259267437).

Almost surely, 2^518534873 is an apocalyptic number.

It is an amenable number.

518534873 is a deficient number, since it is larger than the sum of its proper divisors (1).

518534873 is an equidigital number, since it uses as much as digits as its factorization.

518534873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 44.

The square root of 518534873 is about 22771.3608069434. The cubic root of 518534873 is about 803.3892010564.

The spelling of 518534873 in words is "five hundred eighteen million, five hundred thirty-four thousand, eight hundred seventy-three".