5163857861 has 2 divisors, whose sum is σ = 5163857862. Its totient is φ = 5163857860.

The previous prime is 5163857833. The next prime is 5163857921. The reversal of 5163857861 is 1687583615.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5156101636 + 7756225 = 71806^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 5163857861 - 2²⁶ = 5096748997 is a prime.

It is a super-2 number, since 2×5163857861² = 53330856017222990642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5163857801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2581928930 + 2581928931.

It is an arithmetic number, because the mean of its divisors is an integer number (2581928931).

Almost surely, 2^5163857861 is an apocalyptic number.

It is an amenable number.

5163857861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5163857861 is an equidigital number, since it uses as much as digits as its factorization.

5163857861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 5163857861 is about 71859.9879000825. The cubic root of 5163857861 is about 1728.4550633213.

The spelling of 5163857861 in words is "five billion, one hundred sixty-three million, eight hundred fifty-seven thousand, eight hundred sixty-one".