8981731984 has 135 divisors (see below), whose sum is σ = 19474012233. Its totient is φ = 4012267392.

The previous prime is 8981731963. The next prime is 8981731987. The reversal of 8981731984 is 4891371898.

The square root of 8981731984 is 94772.

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

It can be written as a sum of positive squares in only one way, i.e., 4709802384 + 4271929600 = 68628^2 + 65360^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8981731987) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 208877467 + ... + 208877509.

Almost surely, 2^8981731984 is an apocalyptic number.

8981731984 is the 94772-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8981731984

8981731984 is an abundant number, since it is smaller than the sum of its proper divisors (10492280249).

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

8981731984 is a wasteful number, since it uses less digits than its factorization.

8981731984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 93 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 58.

The cubic root of 8981731984 is about 2078.6754992201.

It can be divided in two parts, 89817 and 31984, that added together give a square (121801 = 349²).

The spelling of 8981731984 in words is "eight billion, nine hundred eighty-one million, seven hundred thirty-one thousand, nine hundred eighty-four".