2106394168 has 8 divisors (see below), whose sum is σ = 3949489080. Its totient is φ = 1053197080.

The previous prime is 2106394151. The next prime is 2106394177. The reversal of 2106394168 is 8614936012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2106394168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131649628 + ... + 131649643.

It is an arithmetic number, because the mean of its divisors is an integer number (493686135).

Almost surely, 2^2106394168 is an apocalyptic number.

It is an amenable number.

2106394168 is a deficient number, since it is larger than the sum of its proper divisors (1843094912).

2106394168 is a wasteful number, since it uses less digits than its factorization.

2106394168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263299277 (or 263299273 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2106394168 is about 45895.4700161138. The cubic root of 2106394168 is about 1281.8775684347.

The spelling of 2106394168 in words is "two billion, one hundred six million, three hundred ninety-four thousand, one hundred sixty-eight".