1881831804528 has 160 divisors (see below), whose sum is σ = 5285489262592. Its totient is φ = 573495552000.

The previous prime is 1881831804521. The next prime is 1881831804547. The reversal of 1881831804528 is 8254081381881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881831804521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47608293 + ... + 47647803.

Almost surely, 2^{1881831804528} 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 1881831804528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2642744631296).

1881831804528 is an abundant number, since it is smaller than the sum of its proper divisors (3403657458064).

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

1881831804528 is a wasteful number, since it uses less digits than its factorization.

1881831804528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40263 (or 40257 counting only the distinct ones).

The product of its (nonzero) digits is 3932160, while the sum is 57.

The spelling of 1881831804528 in words is "one trillion, eight hundred eighty-one billion, eight hundred thirty-one million, eight hundred four thousand, five hundred twenty-eight".