4891666248 has 256 divisors, whose sum is σ = 15941376000. Its totient is φ = 1361048832.

The previous prime is 4891666237. The next prime is 4891666267. The reversal of 4891666248 is 8426661984.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 4891666194 and 4891666203.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11041915 + ... + 11042357.

It is an arithmetic number, because the mean of its divisors is an integer number (62271000).

Almost surely, 2^4891666248 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 4891666248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7970688000).

4891666248 is an abundant number, since it is smaller than the sum of its proper divisors (11049709752).

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

4891666248 is a wasteful number, since it uses less digits than its factorization.

4891666248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 631 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 4891666248 is about 69940.4478681685. The cubic root of 4891666248 is about 1697.5357893957.

The spelling of 4891666248 in words is "four billion, eight hundred ninety-one million, six hundred sixty-six thousand, two hundred forty-eight".