4143681391 has 2 divisors, whose sum is σ = 4143681392. Its totient is φ = 4143681390.

The previous prime is 4143681349. The next prime is 4143681419. The reversal of 4143681391 is 1931863414.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4143681391 - 2¹⁵ = 4143648623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4143681341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071840695 + 2071840696.

It is an arithmetic number, because the mean of its divisors is an integer number (2071840696).

Almost surely, 2^4143681391 is an apocalyptic number.

4143681391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4143681391 is an equidigital number, since it uses as much as digits as its factorization.

4143681391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 4143681391 is about 64371.4330351593. The cubic root of 4143681391 is about 1606.1845780235.

The spelling of 4143681391 in words is "four billion, one hundred forty-three million, six hundred eighty-one thousand, three hundred ninety-one".