518518444 has 12 divisors (see below), whose sum is σ = 931932064. Its totient is φ = 252252144.

The previous prime is 518518421. The next prime is 518518457. The reversal of 518518444 is 444815815.

It is a super-2 number, since 2×518518444² = 537722753536362272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 518518397 and 518518406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751604 + ... + 1751899.

Almost surely, 2^518518444 is an apocalyptic number.

It is an amenable number.

518518444 is a deficient number, since it is larger than the sum of its proper divisors (413413620).

518518444 is a wasteful number, since it uses less digits than its factorization.

518518444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503544 (or 3503542 counting only the distinct ones).

The product of its digits is 102400, while the sum is 40.

The square root of 518518444 is about 22771.0000658733. Note that the first 4 decimals coincide. The cubic root of 518518444 is about 803.3807162393.

The spelling of 518518444 in words is "five hundred eighteen million, five hundred eighteen thousand, four hundred forty-four".