2143884427 has 4 divisors (see below), whose sum is σ = 2146318776. Its totient is φ = 2141450080.

The previous prime is 2143884403. The next prime is 2143884443. The reversal of 2143884427 is 7244883412.

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

It is a cyclic number.

It is not a de Polignac number, because 2143884427 - 2¹⁵ = 2143851659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143884227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215853 + ... + 1217614.

It is an arithmetic number, because the mean of its divisors is an integer number (536579694).

Almost surely, 2^2143884427 is an apocalyptic number.

2143884427 is a deficient number, since it is larger than the sum of its proper divisors (2434349).

2143884427 is an equidigital number, since it uses as much as digits as its factorization.

2143884427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434348.

The product of its digits is 344064, while the sum is 43.

The square root of 2143884427 is about 46302.0995960226. The cubic root of 2143884427 is about 1289.4379754330.

The spelling of 2143884427 in words is "two billion, one hundred forty-three million, eight hundred eighty-four thousand, four hundred twenty-seven".