518346868 has 12 divisors (see below), whose sum is σ = 976884580. Its totient is φ = 239236992.

The previous prime is 518346863. The next prime is 518346889. The reversal of 518346868 is 868643815.

It can be written as a sum of positive squares in 2 ways, for example, as 267060964 + 251285904 = 16342^2 + 15852^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518346863) 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, 4984053 + ... + 4984156.

Almost surely, 2^518346868 is an apocalyptic number.

It is an amenable number.

518346868 is a deficient number, since it is larger than the sum of its proper divisors (458537712).

518346868 is a wasteful number, since it uses less digits than its factorization.

518346868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968226 (or 9968224 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 518346868 is about 22767.2323306984. The cubic root of 518346868 is about 803.2920944761.

The spelling of 518346868 in words is "five hundred eighteen million, three hundred forty-six thousand, eight hundred sixty-eight".