4861 has 2 divisors, whose sum is σ = 4862. Its totient is φ = 4860.

The previous prime is 4831. The next prime is 4871. The reversal of 4861 is 1684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4761 + 100 = 69^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 4861 - 2⁷ = 4733 is a prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4801) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2430 + 2431.

It is an arithmetic number, because the mean of its divisors is an integer number (2431).

2⁴⁸⁶¹ is an apocalyptic number.

It is an amenable number.

4861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4861 is an equidigital number, since it uses as much as digits as its factorization.

4861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 4861 is about 69.7208720542. The cubic root of 4861 is about 16.9398102131.

The spelling of 4861 in words is "four thousand, eight hundred sixty-one".