2101985328 has 40 divisors (see below), whose sum is σ = 5432105200. Its totient is φ = 700406784.

The previous prime is 2101985323. The next prime is 2101985351. The reversal of 2101985328 is 8235891012.

It is not an unprimeable number, because it can be changed into a prime (2101985323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163188 + ... + 175596.

It is an arithmetic number, because the mean of its divisors is an integer number (135802630).

Almost surely, 2^2101985328 is an apocalyptic number.

It is an amenable number.

2101985328 is an abundant number, since it is smaller than the sum of its proper divisors (3330119872).

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

2101985328 is a wasteful number, since it uses less digits than its factorization.

2101985328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15949 (or 15943 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 2101985328 is about 45847.4135366435. The cubic root of 2101985328 is about 1280.9825886244.

The spelling of 2101985328 in words is "two billion, one hundred one million, nine hundred eighty-five thousand, three hundred twenty-eight".