4891187916 has 120 divisors (see below), whose sum is σ = 13413064896. Its totient is φ = 1552400640.

The previous prime is 4891187881. The next prime is 4891187927. The reversal of 4891187916 is 6197811984.

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

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 559096 + ... + 567776.

Almost surely, 2^4891187916 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 4891187916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6706532448).

4891187916 is an abundant number, since it is smaller than the sum of its proper divisors (8521876980).

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

4891187916 is a wasteful number, since it uses less digits than its factorization.

4891187916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781 (or 8770 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The square root of 4891187916 is about 69937.0282182479. The cubic root of 4891187916 is about 1697.4804563649.

The spelling of 4891187916 in words is "four billion, eight hundred ninety-one million, one hundred eighty-seven thousand, nine hundred sixteen".