518242660 has 24 divisors (see below), whose sum is σ = 1172026296. Its totient is φ = 191351040.

The previous prime is 518242657. The next prime is 518242661. The reversal of 518242660 is 66242815.

It can be written as a sum of positive squares in 4 ways, for example, as 31069476 + 487173184 = 5574^2 + 22072^2 .

It is not an unprimeable number, because it can be changed into a prime (518242661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996361 + ... + 996880.

It is an arithmetic number, because the mean of its divisors is an integer number (48834429).

Almost surely, 2^518242660 is an apocalyptic number.

It is an amenable number.

518242660 is an abundant number, since it is smaller than the sum of its proper divisors (653783636).

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

518242660 is a wasteful number, since it uses less digits than its factorization.

518242660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993263 (or 1993261 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 518242660 is about 22764.9436634489. The cubic root of 518242660 is about 803.2382598221.

The spelling of 518242660 in words is "five hundred eighteen million, two hundred forty-two thousand, six hundred sixty".