2195236656 has 240 divisors, whose sum is σ = 6863560704. Its totient is φ = 651442176.

The previous prime is 2195236609. The next prime is 2195236663. The reversal of 2195236656 is 6566325912.

2195236656 is a `hidden beast` number, since 2 + 19 + 523 + 66 + 56 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7150455 + ... + 7150761.

Almost surely, 2^2195236656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2195236656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3431780352).

2195236656 is an abundant number, since it is smaller than the sum of its proper divisors (4668324048).

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

2195236656 is a wasteful number, since it uses less digits than its factorization.

2195236656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 479 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 2195236656 is about 46853.3526655244. The cubic root of 2195236656 is about 1299.6521073033.

The spelling of 2195236656 in words is "two billion, one hundred ninety-five million, two hundred thirty-six thousand, six hundred fifty-six".