2443216636 has 36 divisors (see below), whose sum is σ = 4989507768. Its totient is φ = 1043763168.

The previous prime is 2443216627. The next prime is 2443216639. The reversal of 2443216636 is 6366123442.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2443216595 and 2443216604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443216639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42471 + ... + 81793.

It is an arithmetic number, because the mean of its divisors is an integer number (138597438).

Almost surely, 2^2443216636 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 2443216636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494753884).

2443216636 is an abundant number, since it is smaller than the sum of its proper divisors (2546291132).

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

2443216636 is a wasteful number, since it uses less digits than its factorization.

2443216636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39658 (or 39649 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 2443216636 is about 49428.9048634501. The cubic root of 2443216636 is about 1346.8544296189.

The spelling of 2443216636 in words is "two billion, four hundred forty-three million, two hundred sixteen thousand, six hundred thirty-six".