518390648 has 16 divisors (see below), whose sum is σ = 973675680. Its totient is φ = 258743808.

The previous prime is 518390647. The next prime is 518390651. The reversal of 518390648 is 846093815.

It is a super-3 number, since 3×518390648³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 518390599 and 518390608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518390647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51536 + ... + 60767.

It is an arithmetic number, because the mean of its divisors is an integer number (60854730).

Almost surely, 2^518390648 is an apocalyptic number.

It is an amenable number.

518390648 is a deficient number, since it is larger than the sum of its proper divisors (455285032).

518390648 is a wasteful number, since it uses less digits than its factorization.

518390648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112886 (or 112882 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 518390648 is about 22768.1937799203. The cubic root of 518390648 is about 803.3147094083.

The spelling of 518390648 in words is "five hundred eighteen million, three hundred ninety thousand, six hundred forty-eight".