4891135568 has 60 divisors (see below), whose sum is σ = 10429540800. Its totient is φ = 2220440640.

The previous prime is 4891135567. The next prime is 4891135573. The reversal of 4891135568 is 8655311984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891135567) 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 11 ways as a sum of consecutive naturals, for example, 2877983 + ... + 2879681.

It is an arithmetic number, because the mean of its divisors is an integer number (173825680).

Almost surely, 2^4891135568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4891135568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5214770400).

4891135568 is an abundant number, since it is smaller than the sum of its proper divisors (5538405232).

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

4891135568 is a wasteful number, since it uses less digits than its factorization.

4891135568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3199 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 50.

The square root of 4891135568 is about 69936.6539662858. The cubic root of 4891135568 is about 1697.4744005747.

The spelling of 4891135568 in words is "four billion, eight hundred ninety-one million, one hundred thirty-five thousand, five hundred sixty-eight".