4581668008 has 32 divisors (see below), whose sum is σ = 8901009000. Its totient is φ = 2208317440.

The previous prime is 4581667969. The next prime is 4581668009. The reversal of 4581668008 is 8008661854.

It can be written as a sum of positive squares in 4 ways, for example, as 4572193924 + 9474084 = 67618^2 + 3078^2 .

It is not an unprimeable number, because it can be changed into a prime (4581668009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133308 + ... + 164116.

Almost surely, 2^4581668008 is an apocalyptic number.

It is an amenable number.

4581668008 is a deficient number, since it is larger than the sum of its proper divisors (4319340992).

4581668008 is a wasteful number, since it uses less digits than its factorization.

4581668008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31485 (or 31481 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 4581668008 is about 67688.0196785221. The cubic root of 4581668008 is about 1660.8912821479.

The spelling of 4581668008 in words is "four billion, five hundred eighty-one million, six hundred sixty-eight thousand, eight".