2106911800 has 96 divisors (see below), whose sum is σ = 5712804000. Its totient is φ = 722346240.

The previous prime is 2106911797. The next prime is 2106911827. The reversal of 2106911800 is 81196012.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53244 + ... + 83956.

It is an arithmetic number, because the mean of its divisors is an integer number (59508375).

Almost surely, 2^2106911800 is an apocalyptic number.

2106911800 is a gapful number since it is divisible by the number (20) 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 2106911800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2856402000).

2106911800 is an abundant number, since it is smaller than the sum of its proper divisors (3605892200).

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

2106911800 is a wasteful number, since it uses less digits than its factorization.

2106911800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30750 (or 30727 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 2106911800 is about 45901.1089190664. The cubic root of 2106911800 is about 1281.9825640576.

The spelling of 2106911800 in words is "two billion, one hundred six million, nine hundred eleven thousand, eight hundred".