1841861 has 6 divisors (see below), whose sum is σ = 2142630. Its totient is φ = 1578696.

The previous prime is 1841857. The next prime is 1841869. The reversal of 1841861 is 1681481.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 164836 = 1295^2 + 406^2 .

It is not a de Polignac number, because 1841861 - 2² = 1841857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1841869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18746 + ... + 18843.

It is an arithmetic number, because the mean of its divisors is an integer number (357105).

2^1841861 is an apocalyptic number.

It is an amenable number.

1841861 is a deficient number, since it is larger than the sum of its proper divisors (300769).

1841861 is an equidigital number, since it uses as much as digits as its factorization.

1841861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37603 (or 37596 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 1841861 is about 1357.1517969630. The cubic root of 1841861 is about 122.5798119347.

The spelling of 1841861 in words is "one million, eight hundred forty-one thousand, eight hundred sixty-one".