1803941 has 4 divisors (see below), whose sum is σ = 1824300. Its totient is φ = 1783584.

The previous prime is 1803889. The next prime is 1803947. The reversal of 1803941 is 1493081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1493081 = 359 ⋅4159.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 940900 = 929^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1803941 - 2¹⁴ = 1787557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1803941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803947) 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 in 3 ways as a sum of consecutive naturals, for example, 10046 + ... + 10223.

It is an arithmetic number, because the mean of its divisors is an integer number (456075).

2^1803941 is an apocalyptic number.

It is an amenable number.

1803941 is a deficient number, since it is larger than the sum of its proper divisors (20359).

1803941 is an equidigital number, since it uses as much as digits as its factorization.

1803941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20358.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1803941 is about 1343.1087074396. The cubic root of 1803941 is about 121.7327528214.

It can be divided in two parts, 1803 and 941, that added together give a cube (2744 = 14³).

The spelling of 1803941 in words is "one million, eight hundred three thousand, nine hundred forty-one".