518461816 has 16 divisors (see below), whose sum is σ = 1023280200. Its totient is φ = 245587104.

The previous prime is 518461813. The next prime is 518461817. The reversal of 518461816 is 618164815.

It is a super-4 number, since 4×518461816⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518461813) 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 in 3 ways as a sum of consecutive naturals, for example, 1705315 + ... + 1705618.

Almost surely, 2^518461816 is an apocalyptic number.

It is an amenable number.

518461816 is a deficient number, since it is larger than the sum of its proper divisors (504818384).

518461816 is a wasteful number, since it uses less digits than its factorization.

518461816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410958 (or 3410954 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 518461816 is about 22769.7566082732. The cubic root of 518461816 is about 803.3514691283.

The spelling of 518461816 in words is "five hundred eighteen million, four hundred sixty-one thousand, eight hundred sixteen".