2166234919 has 4 divisors (see below), whose sum is σ = 2166338320. Its totient is φ = 2166131520.

The previous prime is 2166234907. The next prime is 2166234937. The reversal of 2166234919 is 9194326612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2166234919 - 2⁵ = 2166234887 is a prime.

It is a super-2 number, since 2×2166234919² = 9385147448589873122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166234019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7914 + ... + 66295.

It is an arithmetic number, because the mean of its divisors is an integer number (541584580).

Almost surely, 2^2166234919 is an apocalyptic number.

2166234919 is a deficient number, since it is larger than the sum of its proper divisors (103401).

2166234919 is an equidigital number, since it uses as much as digits as its factorization.

2166234919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103400.

The product of its digits is 139968, while the sum is 43.

The square root of 2166234919 is about 46542.8288676140. The cubic root of 2166234919 is about 1293.9033901103.

The spelling of 2166234919 in words is "two billion, one hundred sixty-six million, two hundred thirty-four thousand, nine hundred nineteen".