518166440 has 32 divisors (see below), whose sum is σ = 1271864160. Its totient is φ = 188424000.

The previous prime is 518166433. The next prime is 518166479. The reversal of 518166440 is 44661815.

It is a self number, because there is not a number n which added to its sum of digits gives 518166440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588386 + ... + 589265.

It is an arithmetic number, because the mean of its divisors is an integer number (39745755).

Almost surely, 2^518166440 is an apocalyptic number.

It is an amenable number.

518166440 is an abundant number, since it is smaller than the sum of its proper divisors (753697720).

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

518166440 is a wasteful number, since it uses less digits than its factorization.

518166440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177673 (or 1177669 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 518166440 is about 22763.2695366900. The cubic root of 518166440 is about 803.1988794144.

The spelling of 518166440 in words is "five hundred eighteen million, one hundred sixty-six thousand, four hundred forty".