9881811432 has 80 divisors (see below), whose sum is σ = 27695273760. Its totient is φ = 3291908256.

The previous prime is 9881811397. The next prime is 9881811437. The reversal of 9881811432 is 2341181889.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (9881811437) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1348723 + ... + 1356029.

It is an arithmetic number, because the mean of its divisors is an integer number (346190922).

Almost surely, 2^9881811432 is an apocalyptic number.

It is an amenable number.

9881811432 is an abundant number, since it is smaller than the sum of its proper divisors (17813462328).

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

9881811432 is a wasteful number, since it uses less digits than its factorization.

9881811432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412 (or 9399 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 9881811432 is about 99407.3006976852. The cubic root of 9881811432 is about 2145.9133789223.

The spelling of 9881811432 in words is "nine billion, eight hundred eighty-one million, eight hundred eleven thousand, four hundred thirty-two".