1840559 has 4 divisors (see below), whose sum is σ = 2103504. Its totient is φ = 1577616.

The previous prime is 1840541. The next prime is 1840561. The reversal of 1840559 is 9550481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1840559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131462 + ... + 131475.

It is an arithmetic number, because the mean of its divisors is an integer number (525876).

2^1840559 is an apocalyptic number.

1840559 is a deficient number, since it is larger than the sum of its proper divisors (262945).

1840559 is an equidigital number, since it uses as much as digits as its factorization.

1840559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262944.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1840559 is about 1356.6720311114. The cubic root of 1840559 is about 122.5509214925.

The spelling of 1840559 in words is "one million, eight hundred forty thousand, five hundred fifty-nine".