2140538443 has 2 divisors, whose sum is σ = 2140538444. Its totient is φ = 2140538442.

The previous prime is 2140538441. The next prime is 2140538497. The reversal of 2140538443 is 3448350412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2140538443 - 2¹ = 2140538441 is a prime.

Together with 2140538441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2140538399 and 2140538408.

It is not a weakly prime, because it can be changed into another prime (2140538441) 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 as a sum of consecutive naturals, namely, 1070269221 + 1070269222.

It is an arithmetic number, because the mean of its divisors is an integer number (1070269222).

Almost surely, 2^2140538443 is an apocalyptic number.

2140538443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140538443 is an equidigital number, since it uses as much as digits as its factorization.

2140538443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 2140538443 is about 46265.9533890743. The cubic root of 2140538443 is about 1288.7668128058.

Adding to 2140538443 its reverse (3448350412), we get a palindrome (5588888855).

The spelling of 2140538443 in words is "two billion, one hundred forty million, five hundred thirty-eight thousand, four hundred forty-three".