518419873 has 2 divisors, whose sum is σ = 518419874. Its totient is φ = 518419872.

The previous prime is 518419861. The next prime is 518419903. The reversal of 518419873 is 378914815.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458944929 + 59474944 = 21423^2 + 7712^2 .

It is a cyclic number.

It is not a de Polignac number, because 518419873 - 2⁵ = 518419841 is a prime.

It is a super-2 number, since 2×518419873² = 537518329442672258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (518419373) 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, 259209936 + 259209937.

It is an arithmetic number, because the mean of its divisors is an integer number (259209937).

Almost surely, 2^518419873 is an apocalyptic number.

It is an amenable number.

518419873 is a deficient number, since it is larger than the sum of its proper divisors (1).

518419873 is an equidigital number, since it uses as much as digits as its factorization.

518419873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 518419873 is about 22768.8355653072. The cubic root of 518419873 is about 803.3298051225.

The spelling of 518419873 in words is "five hundred eighteen million, four hundred nineteen thousand, eight hundred seventy-three".