4138243271 has 2 divisors, whose sum is σ = 4138243272. Its totient is φ = 4138243270.

The previous prime is 4138243261. The next prime is 4138243321. The reversal of 4138243271 is 1723428314.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4138243271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4138243261) 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, 2069121635 + 2069121636.

It is an arithmetic number, because the mean of its divisors is an integer number (2069121636).

Almost surely, 2^4138243271 is an apocalyptic number.

4138243271 is a deficient number, since it is larger than the sum of its proper divisors (1).

4138243271 is an equidigital number, since it uses as much as digits as its factorization.

4138243271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 4138243271 is about 64329.1790014454. The cubic root of 4138243271 is about 1605.4816243361.

The spelling of 4138243271 in words is "four billion, one hundred thirty-eight million, two hundred forty-three thousand, two hundred seventy-one".