1881996480 has 672 divisors, whose sum is σ = 8201217024. Its totient is φ = 385523712.

The previous prime is 1881996449. The next prime is 1881996481. The reversal of 1881996480 is 846991881.

It is a tau number, because it is divible by the number of its divisors (672).

It is not an unprimeable number, because it can be changed into a prime (1881996481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11269357 + ... + 11269523.

It is an arithmetic number, because the mean of its divisors is an integer number (12204192).

Almost surely, 2^1881996480 is an apocalyptic number.

1881996480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881996480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4100608512).

1881996480 is an abundant number, since it is smaller than the sum of its proper divisors (6319220544).

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

1881996480 is a wasteful number, since it uses less digits than its factorization.

1881996480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 1881996480 is about 43381.9833571495. The cubic root of 1881996480 is about 1234.6378936975.

The spelling of 1881996480 in words is "one billion, eight hundred eighty-one million, nine hundred ninety-six thousand, four hundred eighty".