518408780 has 12 divisors (see below), whose sum is σ = 1088658480. Its totient is φ = 207363504.

The previous prime is 518408771. The next prime is 518408783. The reversal of 518408780 is 87804815.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (518408783) 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, 12960200 + ... + 12960239.

It is an arithmetic number, because the mean of its divisors is an integer number (90721540).

Almost surely, 2^518408780 is an apocalyptic number.

It is an amenable number.

518408780 is an abundant number, since it is smaller than the sum of its proper divisors (570249700).

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

518408780 is a wasteful number, since it uses less digits than its factorization.

518408780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25920448 (or 25920446 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 518408780 is about 22768.5919634922. The cubic root of 518408780 is about 803.3240752746.

The spelling of 518408780 in words is "five hundred eighteen million, four hundred eight thousand, seven hundred eighty".