2106643446 has 12 divisors (see below), whose sum is σ = 4564394172. Its totient is φ = 702214476.

The previous prime is 2106643423. The next prime is 2106643453. The reversal of 2106643446 is 6443466012.

2106643446 is a `hidden beast` number, since 2 + 1 + 0 + 6 + 643 + 4 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2106643446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58517856 + ... + 58517891.

It is an arithmetic number, because the mean of its divisors is an integer number (380366181).

Almost surely, 2^2106643446 is an apocalyptic number.

2106643446 is an abundant number, since it is smaller than the sum of its proper divisors (2457750726).

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

2106643446 is a wasteful number, since it uses less digits than its factorization.

2106643446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117035755 (or 117035752 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 2106643446 is about 45898.1856504154. The cubic root of 2106643446 is about 1281.9281337209.

The spelling of 2106643446 in words is "two billion, one hundred six million, six hundred forty-three thousand, four hundred forty-six".