8981808372 has 18 divisors (see below), whose sum is σ = 22704015698. Its totient is φ = 2993936112.

The previous prime is 8981808371. The next prime is 8981808449. The reversal of 8981808372 is 2738081898.

8981808372 is a `hidden beast` number, since 8 + 98 + 180 + 8 + 372 = 666.

8981808372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6235629156 + 2746179216 = 78966^2 + 52404^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8981808371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124747303 + ... + 124747374.

Almost surely, 2^8981808372 is an apocalyptic number.

It is an amenable number.

8981808372 is an abundant number, since it is smaller than the sum of its proper divisors (13722207326).

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

8981808372 is a wasteful number, since it uses less digits than its factorization.

8981808372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249494687 (or 249494682 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 8981808372 is about 94772.4030084708. The cubic root of 8981808372 is about 2078.6813921226.

The spelling of 8981808372 in words is "eight billion, nine hundred eighty-one million, eight hundred eight thousand, three hundred seventy-two".