2180281957 has 16 divisors (see below), whose sum is σ = 2503857664. Its totient is φ = 1859760000.

The previous prime is 2180281949. The next prime is 2180281963. The reversal of 2180281957 is 7591820812.

It is a happy number.

2180281957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2180281957 - 2³ = 2180281949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180281657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770532 + ... + 1771762.

It is an arithmetic number, because the mean of its divisors is an integer number (156491104).

Almost surely, 2^2180281957 is an apocalyptic number.

It is an amenable number.

2180281957 is a deficient number, since it is larger than the sum of its proper divisors (323575707).

2180281957 is a wasteful number, since it uses less digits than its factorization.

2180281957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 2180281957 is about 46693.4894498152. The cubic root of 2180281957 is about 1296.6941561290.

The spelling of 2180281957 in words is "two billion, one hundred eighty million, two hundred eighty-one thousand, nine hundred fifty-seven".