5238878861 has 2 divisors, whose sum is σ = 5238878862. Its totient is φ = 5238878860.

The previous prime is 5238878851. The next prime is 5238878891. The reversal of 5238878861 is 1688788325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5235246025 + 3632836 = 72355^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 5238878861 - 2¹⁰ = 5238877837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5238878797 and 5238878806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5238878851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2619439430 + 2619439431.

It is an arithmetic number, because the mean of its divisors is an integer number (2619439431).

Almost surely, 2^5238878861 is an apocalyptic number.

It is an amenable number.

5238878861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5238878861 is an equidigital number, since it uses as much as digits as its factorization.

5238878861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5160960, while the sum is 56.

The square root of 5238878861 is about 72380.0998963113. The cubic root of 5238878861 is about 1736.7852366088.

The spelling of 5238878861 in words is "five billion, two hundred thirty-eight million, eight hundred seventy-eight thousand, eight hundred sixty-one".