4891616648 has 16 divisors (see below), whose sum is σ = 9262592460. Its totient is φ = 2421592000.

The previous prime is 4891616629. The next prime is 4891616677. The reversal of 4891616648 is 8466161984.

It can be written as a sum of positive squares in 2 ways, for example, as 4368945604 + 522671044 = 66098^2 + 22862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4891616648.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3026183 + ... + 3027798.

Almost surely, 2^4891616648 is an apocalyptic number.

It is an amenable number.

4891616648 is a deficient number, since it is larger than the sum of its proper divisors (4370975812).

4891616648 is a wasteful number, since it uses less digits than its factorization.

4891616648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054088 (or 6054084 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 4891616648 is about 69940.0932798920. The cubic root of 4891616648 is about 1697.5300518783.

The spelling of 4891616648 in words is "four billion, eight hundred ninety-one million, six hundred sixteen thousand, six hundred forty-eight".