581468168 has 16 divisors (see below), whose sum is σ = 1099902780. Its totient is φ = 288160768.

The previous prime is 581468137. The next prime is 581468177. The reversal of 581468168 is 861864185.

It can be written as a sum of positive squares in 2 ways, for example, as 569204164 + 12264004 = 23858^2 + 3502^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320705 + ... + 322512.

Almost surely, 2^581468168 is an apocalyptic number.

It is an amenable number.

581468168 is a deficient number, since it is larger than the sum of its proper divisors (518434612).

581468168 is a wasteful number, since it uses less digits than its factorization.

581468168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643336 (or 643332 counting only the distinct ones).

The product of its digits is 368640, while the sum is 47.

The square root of 581468168 is about 24113.6510715404. The cubic root of 581468168 is about 834.6581688524.

The spelling of 581468168 in words is "five hundred eighty-one million, four hundred sixty-eight thousand, one hundred sixty-eight".