2112443788 has 192 divisors, whose sum is σ = 5057740800. Its totient is φ = 748673280.

The previous prime is 2112443761. The next prime is 2112443797. The reversal of 2112443788 is 8873442112.

It is a self number, because there is not a number n which added to its sum of digits gives 2112443788.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12649281 + ... + 12649447.

It is an arithmetic number, because the mean of its divisors is an integer number (26342400).

Almost surely, 2^2112443788 is an apocalyptic number.

2112443788 is a gapful number since it is divisible by the number (28) 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 2112443788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528870400).

2112443788 is an abundant number, since it is smaller than the sum of its proper divisors (2945297012).

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

2112443788 is a wasteful number, since it uses less digits than its factorization.

2112443788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 298 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 2112443788 is about 45961.3292671132. The cubic root of 2112443788 is about 1283.1035909348.

The spelling of 2112443788 in words is "two billion, one hundred twelve million, four hundred forty-three thousand, seven hundred eighty-eight".