4162861 has 2 divisors, whose sum is σ = 4162862. Its totient is φ = 4162860.

The previous prime is 4162859. The next prime is 4162867. The reversal of 4162861 is 1682614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 281961 = 1970^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 4162861 - 2¹ = 4162859 is a prime.

Together with 4162859, it forms a pair of twin primes.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4162867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2081430 + 2081431.

It is an arithmetic number, because the mean of its divisors is an integer number (2081431).

Almost surely, 2^4162861 is an apocalyptic number.

It is an amenable number.

4162861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4162861 is an equidigital number, since it uses as much as digits as its factorization.

4162861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 4162861 is about 2040.3090452184. The cubic root of 4162861 is about 160.8658914343.

The spelling of 4162861 in words is "four million, one hundred sixty-two thousand, eight hundred sixty-one".