518819444 has 36 divisors (see below), whose sum is σ = 1074757572. Its totient is φ = 217683840.

The previous prime is 518819437. The next prime is 518819449. The reversal of 518819444 is 444918815.

It can be written as a sum of positive squares in 2 ways, for example, as 135443044 + 383376400 = 11638^2 + 19580^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 518819395 and 518819404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518819449) 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 11 ways as a sum of consecutive naturals, for example, 34937 + ... + 47520.

It is an arithmetic number, because the mean of its divisors is an integer number (29854377).

Almost surely, 2^518819444 is an apocalyptic number.

It is an amenable number.

518819444 is an abundant number, since it is smaller than the sum of its proper divisors (555938128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518819444 is a wasteful number, since it uses less digits than its factorization.

518819444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82496 (or 82483 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 518819444 is about 22777.6083906981. The cubic root of 518819444 is about 803.5361403596.

The spelling of 518819444 in words is "five hundred eighteen million, eight hundred nineteen thousand, four hundred forty-four".