It is an unprimeable number.
Almost surely, 2981532580 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 981532580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202947200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
981532580 is a wasteful number, since it uses less digits than its factorization.
981532580 is an evil number, because the sum of its binary digits is even.
The square root of 981532580 is about 31329.4203585065. The cubic root of 981532580 is about 993.8059057456.
The spelling of 981532580 in words is "nine hundred eighty-one million, five hundred thirty-two thousand, five hundred eighty".