2108977218 has 24 divisors (see below), whose sum is σ = 4571739900. Its totient is φ = 702640224.

The previous prime is 2108977193. The next prime is 2108977289. The reversal of 2108977218 is 8127798012.

It can be written as a sum of positive squares in 2 ways, for example, as 1990319769 + 118657449 = 44613^2 + 10893^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8928 + ... + 65556.

Almost surely, 2^2108977218 is an apocalyptic number.

2108977218 is an abundant number, since it is smaller than the sum of its proper divisors (2462762682).

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

2108977218 is a wasteful number, since it uses less digits than its factorization.

2108977218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58706 (or 58703 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 2108977218 is about 45923.6019710998. The cubic root of 2108977218 is about 1282.4013389215.

The spelling of 2108977218 in words is "two billion, one hundred eight million, nine hundred seventy-seven thousand, two hundred eighteen".