2180077188 has 12 divisors (see below), whose sum is σ = 5086846800. Its totient is φ = 726692392.

The previous prime is 2180077177. The next prime is 2180077217. The reversal of 2180077188 is 8817700812.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90836538 + ... + 90836561.

It is an arithmetic number, because the mean of its divisors is an integer number (423903900).

Almost surely, 2^2180077188 is an apocalyptic number.

It is an amenable number.

2180077188 is an abundant number, since it is smaller than the sum of its proper divisors (2906769612).

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

2180077188 is a wasteful number, since it uses less digits than its factorization.

2180077188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181673106 (or 181673104 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 42.

The square root of 2180077188 is about 46691.2967050606. The cubic root of 2180077188 is about 1296.6535602972.

The spelling of 2180077188 in words is "two billion, one hundred eighty million, seventy-seven thousand, one hundred eighty-eight".