2106081888 has 24 divisors (see below), whose sum is σ = 5528465208. Its totient is φ = 702027264.

The previous prime is 2106081881. The next prime is 2106081893. The reversal of 2106081888 is 8881806012.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106081881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10969081 + ... + 10969272.

It is an arithmetic number, because the mean of its divisors is an integer number (230352717).

Almost surely, 2^2106081888 is an apocalyptic number.

It is an amenable number.

2106081888 is an abundant number, since it is smaller than the sum of its proper divisors (3422383320).

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

2106081888 is a wasteful number, since it uses less digits than its factorization.

2106081888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21938366 (or 21938358 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 42.

The square root of 2106081888 is about 45892.0678113331. The cubic root of 2106081888 is about 1281.8142177544.

The spelling of 2106081888 in words is "two billion, one hundred six million, eighty-one thousand, eight hundred eighty-eight".