2180284918 has 32 divisors (see below), whose sum is σ = 3974577984. Its totient is φ = 875645952.

The previous prime is 2180284891. The next prime is 2180284937. The reversal of 2180284918 is 8194820812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35796 + ... + 75112.

It is an arithmetic number, because the mean of its divisors is an integer number (124205562).

Almost surely, 2^2180284918 is an apocalyptic number.

2180284918 is a deficient number, since it is larger than the sum of its proper divisors (1794293066).

2180284918 is a wasteful number, since it uses less digits than its factorization.

2180284918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39576.

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 2180284918 is about 46693.5211565802. The cubic root of 2180284918 is about 1296.6947431340.

The spelling of 2180284918 in words is "two billion, one hundred eighty million, two hundred eighty-four thousand, nine hundred eighteen".