2117505188 has 12 divisors (see below), whose sum is σ = 3796015692. Its totient is φ = 1032929280.

The previous prime is 2117505161. The next prime is 2117505191. The reversal of 2117505188 is 8815057112.

It can be written as a sum of positive squares in 2 ways, for example, as 914941504 + 1202563684 = 30248^2 + 34678^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455645 + ... + 6455972.

It is an arithmetic number, because the mean of its divisors is an integer number (316334641).

Almost surely, 2^2117505188 is an apocalyptic number.

It is an amenable number.

2117505188 is a deficient number, since it is larger than the sum of its proper divisors (1678510504).

2117505188 is a wasteful number, since it uses less digits than its factorization.

2117505188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911662 (or 12911660 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 38.

The square root of 2117505188 is about 46016.3578306671. The cubic root of 2117505188 is about 1284.1275425431.

The spelling of 2117505188 in words is "two billion, one hundred seventeen million, five hundred five thousand, one hundred eighty-eight".