2196140768 has 48 divisors (see below), whose sum is σ = 4517220960. Its totient is φ = 1049664000.

The previous prime is 2196140761. The next prime is 2196140777. The reversal of 2196140768 is 8670416912.

It is a Cunningham number, because it is equal to 46863²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196140761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82013 + ... + 105443.

It is an arithmetic number, because the mean of its divisors is an integer number (94108770).

Almost surely, 2^2196140768 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 2196140768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2258610480).

2196140768 is an abundant number, since it is smaller than the sum of its proper divisors (2321080192).

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

2196140768 is a wasteful number, since it uses less digits than its factorization.

2196140768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23571 (or 23563 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2196140768 is about 46862.9999893306. Note that the first 4 decimals coincide. The cubic root of 2196140768 is about 1299.8305041346.

The spelling of 2196140768 in words is "two billion, one hundred ninety-six million, one hundred forty thousand, seven hundred sixty-eight".