4138181431 has 2 divisors, whose sum is σ = 4138181432. Its totient is φ = 4138181430.

The previous prime is 4138181387. The next prime is 4138181447. The reversal of 4138181431 is 1341818314.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4138181431 - 2²⁹ = 3601310519 is a prime.

It is a super-2 number, since 2×4138181431² = 34249091111746415522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4138181231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069090715 + 2069090716.

It is an arithmetic number, because the mean of its divisors is an integer number (2069090716).

Almost surely, 2^4138181431 is an apocalyptic number.

4138181431 is a deficient number, since it is larger than the sum of its proper divisors (1).

4138181431 is an equidigital number, since it uses as much as digits as its factorization.

4138181431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 4138181431 is about 64328.6983468498. The cubic root of 4138181431 is about 1605.4736271038.

Adding to 4138181431 its reverse (1341818314), we get a palindrome (5479999745).

The spelling of 4138181431 in words is "four billion, one hundred thirty-eight million, one hundred eighty-one thousand, four hundred thirty-one".