2099861632 has 64 divisors (see below), whose sum is σ = 4710931200. Its totient is φ = 923673600.

The previous prime is 2099861591. The next prime is 2099861653. The reversal of 2099861632 is 2361689902.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

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, 19594 + ... + 67702.

It is an arithmetic number, because the mean of its divisors is an integer number (73608300).

Almost surely, 2^2099861632 is an apocalyptic number.

2099861632 is a gapful number since it is divisible by the number (22) 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 2099861632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355465600).

2099861632 is an abundant number, since it is smaller than the sum of its proper divisors (2611069568).

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

2099861632 is a wasteful number, since it uses less digits than its factorization.

2099861632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48165 (or 48153 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2099861632 is about 45824.2472060371. The cubic root of 2099861632 is about 1280.5510387860.

The spelling of 2099861632 in words is "two billion, ninety-nine million, eight hundred sixty-one thousand, six hundred thirty-two".