2194432843 has 18 divisors (see below), whose sum is σ = 2289171516. Its totient is φ = 2103133824.

The previous prime is 2194432837. The next prime is 2194432853. The reversal of 2194432843 is 3482344912.

It is not a de Polignac number, because 2194432843 - 2²⁵ = 2160878411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2194432796 and 2194432805.

It is not an unprimeable number, because it can be changed into a prime (2194432853) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22622971 + ... + 22623067.

Almost surely, 2^2194432843 is an apocalyptic number.

2194432843 is a deficient number, since it is larger than the sum of its proper divisors (94738673).

2194432843 is an frugal number, since it uses more digits than its factorization.

2194432843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 223 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 2194432843 is about 46844.7739134260. The cubic root of 2194432843 is about 1299.4934600508.

The spelling of 2194432843 in words is "two billion, one hundred ninety-four million, four hundred thirty-two thousand, eight hundred forty-three".