1881798912 has 576 divisors, whose sum is σ = 7064064000. Its totient is φ = 481738752.

The previous prime is 1881798907. The next prime is 1881798929. The reversal of 1881798912 is 2198971881.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21143764 + ... + 21143852.

It is an arithmetic number, because the mean of its divisors is an integer number (12264000).

Almost surely, 2^1881798912 is an apocalyptic number.

1881798912 is a gapful number since it is divisible by the number (12) 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 1881798912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3532032000).

1881798912 is an abundant number, since it is smaller than the sum of its proper divisors (5182265088).

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

1881798912 is a wasteful number, since it uses less digits than its factorization.

1881798912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 143 counting only the distinct ones).

The product of its digits is 580608, while the sum is 54.

The square root of 1881798912 is about 43379.7062230716. The cubic root of 1881798912 is about 1234.5946889629.

The spelling of 1881798912 in words is "one billion, eight hundred eighty-one million, seven hundred ninety-eight thousand, nine hundred twelve".