518517849 has 16 divisors (see below), whose sum is σ = 703789632. Its totient is φ = 339511488.

The previous prime is 518517829. The next prime is 518517871. The reversal of 518517849 is 948715815.

It is a happy number.

It is not a de Polignac number, because 518517849 - 2⁷ = 518517721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 518517798 and 518517807.

It is not an unprimeable number, because it can be changed into a prime (518517829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37059 + ... + 49095.

It is an arithmetic number, because the mean of its divisors is an integer number (43986852).

Almost surely, 2^518517849 is an apocalyptic number.

It is an amenable number.

518517849 is a deficient number, since it is larger than the sum of its proper divisors (185271783).

518517849 is a wasteful number, since it uses less digits than its factorization.

518517849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296.

The product of its digits is 403200, while the sum is 48.

The square root of 518517849 is about 22770.9870010063. The cubic root of 518517849 is about 803.3804089460.

The spelling of 518517849 in words is "five hundred eighteen million, five hundred seventeen thousand, eight hundred forty-nine".