518460881 has 2 divisors, whose sum is σ = 518460882. Its totient is φ = 518460880.

The previous prime is 518460853. The next prime is 518460967. The reversal of 518460881 is 188064815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369254656 + 149206225 = 19216^2 + 12215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518460881 is a prime.

It is a super-2 number, since 2×518460881² = 537603370254592322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (518460821) 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, 259230440 + 259230441.

It is an arithmetic number, because the mean of its divisors is an integer number (259230441).

Almost surely, 2^518460881 is an apocalyptic number.

It is an amenable number.

518460881 is a deficient number, since it is larger than the sum of its proper divisors (1).

518460881 is an equidigital number, since it uses as much as digits as its factorization.

518460881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 41.

The square root of 518460881 is about 22769.7360766435. The cubic root of 518460881 is about 803.3509862036.

The spelling of 518460881 in words is "five hundred eighteen million, four hundred sixty thousand, eight hundred eighty-one".