518913216 has 140 divisors (see below), whose sum is σ = 1588333120. Its totient is φ = 167339520.

The previous prime is 518913181. The next prime is 518913221. The reversal of 518913216 is 612319815.

518913216 is a `hidden beast` number, since 518 + 9 + 132 + 1 + 6 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 159090 + ... + 162318.

Almost surely, 2^518913216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518913216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794166560).

518913216 is an abundant number, since it is smaller than the sum of its proper divisors (1069419904).

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

518913216 is a wasteful number, since it uses less digits than its factorization.

518913216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284 (or 3265 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 518913216 is about 22779.6667227596. Note that the first 3 decimals coincide. The cubic root of 518913216 is about 803.5845481134.

The spelling of 518913216 in words is "five hundred eighteen million, nine hundred thirteen thousand, two hundred sixteen".