518212944 has 80 divisors (see below), whose sum is σ = 1498981440. Its totient is φ = 171400320.

The previous prime is 518212939. The next prime is 518212949. The reversal of 518212944 is 449212815.

It is an interprime number because it is at equal distance from previous prime (518212939) and next prime (518212949).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 518212899 and 518212908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518212949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52014 + ... + 61170.

It is an arithmetic number, because the mean of its divisors is an integer number (18737268).

Almost surely, 2^518212944 is an apocalyptic number.

518212944 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518212944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749490720).

518212944 is an abundant number, since it is smaller than the sum of its proper divisors (980768496).

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

518212944 is a wasteful number, since it uses less digits than its factorization.

518212944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9305 (or 9293 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 518212944 is about 22764.2909839072. The cubic root of 518212944 is about 803.2229069857. Note that the first 3 decimals are identical.

The spelling of 518212944 in words is "five hundred eighteen million, two hundred twelve thousand, nine hundred forty-four".