18130568 has 32 divisors (see below), whose sum is σ = 37243800. Its totient is φ = 8236032.

The previous prime is 18130559. The next prime is 18130583. The reversal of 18130568 is 86503181.

It can be written as a sum of positive squares in 4 ways, for example, as 14122564 + 4008004 = 3758^2 + 2002^2 .

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, 1646 + ... + 6242.

Almost surely, 2^18130568 is an apocalyptic number.

It is an amenable number.

18130568 is an abundant number, since it is smaller than the sum of its proper divisors (19113232).

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

18130568 is a wasteful number, since it uses less digits than its factorization.

18130568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 18130568 is about 4258.0004697041. Note that the first 3 decimals coincide. The cubic root of 18130568 is about 262.7062892406.

The spelling of 18130568 in words is "eighteen million, one hundred thirty thousand, five hundred sixty-eight".