2161830585 has 16 divisors (see below), whose sum is σ = 3662395776. Its totient is φ = 1085154048.

The previous prime is 2161830569. The next prime is 2161830589. The reversal of 2161830585 is 5850381612.

2161830585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2161830585 - 2⁴ = 2161830569 is a prime.

It is a super-2 number, since 2×2161830585² = 9347022956482884450, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2161830589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4238629 + ... + 4239138.

It is an arithmetic number, because the mean of its divisors is an integer number (228899736).

Almost surely, 2^2161830585 is an apocalyptic number.

It is an amenable number.

2161830585 is a deficient number, since it is larger than the sum of its proper divisors (1500565191).

2161830585 is a wasteful number, since it uses less digits than its factorization.

2161830585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477792.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 2161830585 is about 46495.4899425740. The cubic root of 2161830585 is about 1293.0258845946.

The spelling of 2161830585 in words is "two billion, one hundred sixty-one million, eight hundred thirty thousand, five hundred eighty-five".