1846861 has 2 divisors, whose sum is σ = 1846862. Its totient is φ = 1846860.

The previous prime is 1846849. The next prime is 1846879. The reversal of 1846861 is 1686481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 866761 = 990^2 + 931^2 .

It is a cyclic number.

It is not a de Polignac number, because 1846861 - 2¹¹ = 1844813 is a prime.

1846861 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1846811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 923430 + 923431.

It is an arithmetic number, because the mean of its divisors is an integer number (923431).

2^1846861 is an apocalyptic number.

It is an amenable number.

1846861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1846861 is an equidigital number, since it uses as much as digits as its factorization.

1846861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 34.

The square root of 1846861 is about 1358.9926416283. The cubic root of 1846861 is about 122.6906319683.

The spelling of 1846861 in words is "one million, eight hundred forty-six thousand, eight hundred sixty-one".