1846561 has 2 divisors, whose sum is σ = 1846562. Its totient is φ = 1846560.

The previous prime is 1846547. The next prime is 1846567. The reversal of 1846561 is 1656481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 712336 = 1065^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1846561 - 2⁵ = 1846529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1846567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 923280 + 923281.

It is an arithmetic number, because the mean of its divisors is an integer number (923281).

2^1846561 is an apocalyptic number.

It is an amenable number.

1846561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1846561 is an equidigital number, since it uses as much as digits as its factorization.

1846561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 1846561 is about 1358.8822612721. The cubic root of 1846561 is about 122.6839884106.

Adding to 1846561 its product of digits (5760), we get a square (1852321 = 1361²).

The spelling of 1846561 in words is "one million, eight hundred forty-six thousand, five hundred sixty-one".