2179209143 has 2 divisors, whose sum is σ = 2179209144. Its totient is φ = 2179209142.

The previous prime is 2179209119. The next prime is 2179209203. The reversal of 2179209143 is 3419029712.

2179209143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2179209143 - 2²⁸ = 1910773687 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2179209097 and 2179209106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2179206143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089604571 + 1089604572.

It is an arithmetic number, because the mean of its divisors is an integer number (1089604572).

Almost surely, 2^2179209143 is an apocalyptic number.

2179209143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179209143 is an equidigital number, since it uses as much as digits as its factorization.

2179209143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 2179209143 is about 46682.0002035046. Note that the first 3 decimals coincide. The cubic root of 2179209143 is about 1296.4814405412.

The spelling of 2179209143 in words is "two billion, one hundred seventy-nine million, two hundred nine thousand, one hundred forty-three".