518821480 has 16 divisors (see below), whose sum is σ = 1167348420. Its totient is φ = 207528576.

The previous prime is 518821469. The next prime is 518821489. The reversal of 518821480 is 84128815.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 517926564 + 894916 = 22758^2 + 946^2 .

It is not an unprimeable number, because it can be changed into a prime (518821489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6485229 + ... + 6485308.

Almost surely, 2^518821480 is an apocalyptic number.

It is an amenable number.

518821480 is an abundant number, since it is smaller than the sum of its proper divisors (648526940).

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

518821480 is a wasteful number, since it uses less digits than its factorization.

518821480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970548 (or 12970544 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 518821480 is about 22777.6530836695. The cubic root of 518821480 is about 803.5371914622.

The spelling of 518821480 in words is "five hundred eighteen million, eight hundred twenty-one thousand, four hundred eighty".