4981616640 is a `hidden beast` number, since 498 + 1 + 61 + 66 + 40 = 666.
It is a tau number, because it is divible by the number of its divisors (1248).
It is a congruent number.
It is an unprimeable number.
Almost surely, 24981616640 is an apocalyptic number.
4981616640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 4981616640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12021504768).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4981616640 is a wasteful number, since it uses less digits than its factorization.
4981616640 is an evil number, because the sum of its binary digits is even.
The square root of 4981616640 is about 70580.5684306949. The cubic root of 4981616640 is about 1707.8776994883.
The spelling of 4981616640 in words is "four billion, nine hundred eighty-one million, six hundred sixteen thousand, six hundred forty".