2195668216 has 16 divisors (see below), whose sum is σ = 4705003440. Its totient is φ = 941000640.

The previous prime is 2195668207. The next prime is 2195668243. The reversal of 2195668216 is 6128665912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19604125 + ... + 19604236.

It is an arithmetic number, because the mean of its divisors is an integer number (294062715).

Almost surely, 2^2195668216 is an apocalyptic number.

It is an amenable number.

2195668216 is an abundant number, since it is smaller than the sum of its proper divisors (2509335224).

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

2195668216 is a wasteful number, since it uses less digits than its factorization.

2195668216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39208374 (or 39208370 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 2195668216 is about 46857.9578727029. The cubic root of 2195668216 is about 1299.7372676149.

The spelling of 2195668216 in words is "two billion, one hundred ninety-five million, six hundred sixty-eight thousand, two hundred sixteen".