2208165894 has 32 divisors (see below), whose sum is σ = 5353130880. Its totient is φ = 669141000.

The previous prime is 2208165857. The next prime is 2208165913. The reversal of 2208165894 is 4985618022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1858132 + ... + 1859319.

It is an arithmetic number, because the mean of its divisors is an integer number (167285340).

Almost surely, 2^2208165894 is an apocalyptic number.

2208165894 is an abundant number, since it is smaller than the sum of its proper divisors (3144964986).

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

2208165894 is a wasteful number, since it uses less digits than its factorization.

2208165894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717473 (or 3717467 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 2208165894 is about 46991.1256941138. The cubic root of 2208165894 is about 1302.1986254343.

The spelling of 2208165894 in words is "two billion, two hundred eight million, one hundred sixty-five thousand, eight hundred ninety-four".