2161116830 has 16 divisors (see below), whose sum is σ = 4024149120. Its totient is φ = 834638112.

The previous prime is 2161116827. The next prime is 2161116863. The reversal of 2161116830 is 386111612.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2161116793 and 2161116802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3725774 + ... + 3726353.

It is an arithmetic number, because the mean of its divisors is an integer number (251509320).

Almost surely, 2^2161116830 is an apocalyptic number.

2161116830 is a deficient number, since it is larger than the sum of its proper divisors (1863032290).

2161116830 is a wasteful number, since it uses less digits than its factorization.

2161116830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7452163.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 2161116830 is about 46487.8137795272. The cubic root of 2161116830 is about 1292.8835661224.

The spelling of 2161116830 in words is "two billion, one hundred sixty-one million, one hundred sixteen thousand, eight hundred thirty".