4891323844 has 75 divisors (see below), whose sum is σ = 10004216635. Its totient is φ = 2092544960.

The previous prime is 4891323839. The next prime is 4891323859. The reversal of 4891323844 is 4483231984.

It is a happy number.

The square root of 4891323844 is 69938.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1518037444 + 3373286400 = 38962^2 + 58080^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=4, B=187.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4891323794 and 4891323803.

It is an unprimeable number.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 287724924 + ... + 287724940.

Almost surely, 2^4891323844 is an apocalyptic number.

4891323844 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

4891323844 is the 69938-th square number.

It is an amenable number.

4891323844 is an abundant number, since it is smaller than the sum of its proper divisors (5112892791).

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

4891323844 is an frugal number, since it uses more digits than its factorization.

4891323844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 30 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The cubic root of 4891323844 is about 1697.4961807649.

The spelling of 4891323844 in words is "four billion, eight hundred ninety-one million, three hundred twenty-three thousand, eight hundred forty-four".