518682390 has 128 divisors (see below), whose sum is σ = 1343913984. Its totient is φ = 127872000.

The previous prime is 518682337. The next prime is 518682397. The reversal of 518682390 is 93286815.

It is a super-2 number, since 2×518682390² = 538062843392224200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518682397) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2325819 + ... + 2326041.

It is an arithmetic number, because the mean of its divisors is an integer number (10499328).

Almost surely, 2^518682390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518682390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (671956992).

518682390 is an abundant number, since it is smaller than the sum of its proper divisors (825231594).

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

518682390 is a wasteful number, since it uses less digits than its factorization.

518682390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 518682390 is about 22774.5996671731. The cubic root of 518682390 is about 803.4653787216.

The spelling of 518682390 in words is "five hundred eighteen million, six hundred eighty-two thousand, three hundred ninety".