2196648636 has 288 divisors, whose sum is σ = 6771840768. Its totient is φ = 548674560.

The previous prime is 2196648631. The next prime is 2196648661. The reversal of 2196648636 is 6368466912.

It is a happy number.

2196648636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196648631) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13476291 + ... + 13476453.

It is an arithmetic number, because the mean of its divisors is an integer number (23513336).

Almost surely, 2^2196648636 is an apocalyptic number.

2196648636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2196648636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3385920384).

2196648636 is an abundant number, since it is smaller than the sum of its proper divisors (4575192132).

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

2196648636 is a wasteful number, since it uses less digits than its factorization.

2196648636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 272 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 51.

The square root of 2196648636 is about 46868.4183219361. The cubic root of 2196648636 is about 1299.9306937411.

The spelling of 2196648636 in words is "two billion, one hundred ninety-six million, six hundred forty-eight thousand, six hundred thirty-six".