4131868639 has 2 divisors, whose sum is σ = 4131868640. Its totient is φ = 4131868638.

The previous prime is 4131868633. The next prime is 4131868703. The reversal of 4131868639 is 9368681314.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4131868639 - 2⁵ = 4131868607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4131868592 and 4131868601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4131868633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065934319 + 2065934320.

It is an arithmetic number, because the mean of its divisors is an integer number (2065934320).

Almost surely, 2^4131868639 is an apocalyptic number.

4131868639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4131868639 is an equidigital number, since it uses as much as digits as its factorization.

4131868639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 4131868639 is about 64279.6129344289. The cubic root of 4131868639 is about 1604.6568287697.

The spelling of 4131868639 in words is "four billion, one hundred thirty-one million, eight hundred sixty-eight thousand, six hundred thirty-nine".