2196791136 has 144 divisors (see below), whose sum is σ = 6668573184. Its totient is φ = 683569152.

The previous prime is 2196791087. The next prime is 2196791147. The reversal of 2196791136 is 6311976912.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 2196791091 and 2196791100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620026 + ... + 623558.

It is an arithmetic number, because the mean of its divisors is an integer number (46309536).

Almost surely, 2^2196791136 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 2196791136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3334286592).

2196791136 is an abundant number, since it is smaller than the sum of its proper divisors (4471782048).

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

2196791136 is a wasteful number, since it uses less digits than its factorization.

2196791136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693 (or 3682 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 2196791136 is about 46869.9385107341. The cubic root of 2196791136 is about 1299.9588026392.

The spelling of 2196791136 in words is "two billion, one hundred ninety-six million, seven hundred ninety-one thousand, one hundred thirty-six".