581413868 has 12 divisors (see below), whose sum is σ = 1162827792. Its totient is φ = 249177360.

The previous prime is 581413853. The next prime is 581413901. The reversal of 581413868 is 868314185.

It is a happy number.

581413868 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10382363 + ... + 10382418.

It is an arithmetic number, because the mean of its divisors is an integer number (96902316).

Almost surely, 2^581413868 is an apocalyptic number.

It is an amenable number.

581413868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

581413868 is a wasteful number, since it uses less digits than its factorization.

581413868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20764792 (or 20764790 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 581413868 is about 24112.5251269957. The cubic root of 581413868 is about 834.6321867196.

The spelling of 581413868 in words is "five hundred eighty-one million, four hundred thirteen thousand, eight hundred sixty-eight".