2155946112 has 128 divisors (see below), whose sum is σ = 6698136000. Its totient is φ = 680804352.

The previous prime is 2155946087. The next prime is 2155946141. The reversal of 2155946112 is 2116495512.

2155946112 is a `hidden beast` number, since 2 + 1 + 5 + 594 + 61 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49248 + ... + 82080.

Almost surely, 2^2155946112 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 2155946112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3349068000).

2155946112 is an abundant number, since it is smaller than the sum of its proper divisors (4542189888).

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

2155946112 is a wasteful number, since it uses less digits than its factorization.

2155946112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32875 (or 32857 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 2155946112 is about 46432.1667812304. The cubic root of 2155946112 is about 1291.8516189701.

The spelling of 2155946112 in words is "two billion, one hundred fifty-five million, nine hundred forty-six thousand, one hundred twelve".