2163388085 has 4 divisors (see below), whose sum is σ = 2596065708. Its totient is φ = 1730710464.

The previous prime is 2163388037. The next prime is 2163388099. The reversal of 2163388085 is 5808833612.

2163388085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299393809 + 1863994276 = 17303^2 + 43174^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163388085 - 2¹⁴ = 2163371701 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 216338804 + ... + 216338813.

It is an arithmetic number, because the mean of its divisors is an integer number (649016427).

Almost surely, 2^2163388085 is an apocalyptic number.

It is an amenable number.

2163388085 is a deficient number, since it is larger than the sum of its proper divisors (432677623).

2163388085 is an equidigital number, since it uses as much as digits as its factorization.

2163388085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432677622.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 2163388085 is about 46512.2358632651. The cubic root of 2163388085 is about 1293.3363320436.

The spelling of 2163388085 in words is "two billion, one hundred sixty-three million, three hundred eighty-eight thousand, eighty-five".