2143793191 has 2 divisors, whose sum is σ = 2143793192. Its totient is φ = 2143793190.

The previous prime is 2143793159. The next prime is 2143793207. The reversal of 2143793191 is 1913973412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2143793191 - 2⁵ = 2143793159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143793791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071896595 + 1071896596.

It is an arithmetic number, because the mean of its divisors is an integer number (1071896596).

Almost surely, 2^2143793191 is an apocalyptic number.

2143793191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143793191 is an equidigital number, since it uses as much as digits as its factorization.

2143793191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 2143793191 is about 46301.1143602398. The cubic root of 2143793191 is about 1289.4196838948.

The spelling of 2143793191 in words is "two billion, one hundred forty-three million, seven hundred ninety-three thousand, one hundred ninety-one".