1881996832 has 48 divisors (see below), whose sum is σ = 3962091672. Its totient is φ = 876851200.

The previous prime is 1881996817. The next prime is 1881996833. The reversal of 1881996832 is 2386991881.

It can be written as a sum of positive squares in 4 ways, for example, as 1856231056 + 25765776 = 43084^2 + 5076^2 .

It is not an unprimeable number, because it can be changed into a prime (1881996833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37818 + ... + 72070.

Almost surely, 2^1881996832 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 1881996832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1981045836).

1881996832 is an abundant number, since it is smaller than the sum of its proper divisors (2080094840).

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

1881996832 is a wasteful number, since it uses less digits than its factorization.

1881996832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34381 (or 34373 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The square root of 1881996832 is about 43381.9874141331. The cubic root of 1881996832 is about 1234.6379706712.

The spelling of 1881996832 in words is "one billion, eight hundred eighty-one million, nine hundred ninety-six thousand, eight hundred thirty-two".