1819241 has 4 divisors (see below), whose sum is σ = 1822800. Its totient is φ = 1815684.

The previous prime is 1819217. The next prime is 1819261. The reversal of 1819241 is 1429181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1429181 = 13 ⋅109937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1819241 is a prime.

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 1819241.

It is not an unprimeable number, because it can be changed into a prime (1819261) 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, 851 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (455700).

2^1819241 is an apocalyptic number.

It is an amenable number.

1819241 is a deficient number, since it is larger than the sum of its proper divisors (3559).

1819241 is an equidigital number, since it uses as much as digits as its factorization.

1819241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558.

The product of its digits is 576, while the sum is 26.

The square root of 1819241 is about 1348.7924228731. The cubic root of 1819241 is about 122.0759403579.

The spelling of 1819241 in words is "one million, eight hundred nineteen thousand, two hundred forty-one".