2161715108 has 24 divisors (see below), whose sum is σ = 4324418112. Its totient is φ = 926237664.

The previous prime is 2161715093. The next prime is 2161715113. The reversal of 2161715108 is 8015171612.

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 7 ways as a sum of consecutive naturals, for example, 220691 + ... + 230277.

It is an arithmetic number, because the mean of its divisors is an integer number (180184088).

Almost surely, 2^2161715108 is an apocalyptic number.

2161715108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2161715108 is an abundant number, since it is smaller than the sum of its proper divisors (2162703004).

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

2161715108 is a wasteful number, since it uses less digits than its factorization.

2161715108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651 (or 17649 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 32.

The square root of 2161715108 is about 46494.2481173747. The cubic root of 2161715108 is about 1293.0028612967.

The spelling of 2161715108 in words is "two billion, one hundred sixty-one million, seven hundred fifteen thousand, one hundred eight".