518968940 has 24 divisors (see below), whose sum is σ = 1245525792. Its totient is φ = 177932160.

The previous prime is 518968921. The next prime is 518968943. The reversal of 518968940 is 49869815.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (518968943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853321 + ... + 1853600.

It is an arithmetic number, because the mean of its divisors is an integer number (51896908).

Almost surely, 2^518968940 is an apocalyptic number.

It is an amenable number.

518968940 is an abundant number, since it is smaller than the sum of its proper divisors (726556852).

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

518968940 is a wasteful number, since it uses less digits than its factorization.

518968940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706937 (or 3706935 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 518968940 is about 22780.8897982498. The cubic root of 518968940 is about 803.6133116531.

The spelling of 518968940 in words is "five hundred eighteen million, nine hundred sixty-eight thousand, nine hundred forty".