2108281906 has 16 divisors (see below), whose sum is σ = 3192539904. Its totient is φ = 1044114624.

The previous prime is 2108281897. The next prime is 2108281919. The reversal of 2108281906 is 6091828012.

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 7 ways as a sum of consecutive naturals, for example, 563815 + ... + 567541.

It is an arithmetic number, because the mean of its divisors is an integer number (199533744).

Almost surely, 2^2108281906 is an apocalyptic number.

2108281906 is a deficient number, since it is larger than the sum of its proper divisors (1084257998).

2108281906 is a wasteful number, since it uses less digits than its factorization.

2108281906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6345.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 2108281906 is about 45916.0310349229. The cubic root of 2108281906 is about 1282.2603911290.

The spelling of 2108281906 in words is "two billion, one hundred eight million, two hundred eighty-one thousand, nine hundred six".