1834561 has 4 divisors (see below), whose sum is σ = 1853572. Its totient is φ = 1815552.

The previous prime is 1834523. The next prime is 1834597. The reversal of 1834561 is 1654381.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1404225 + 430336 = 1185^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1834561 - 2⁷ = 1834433 is a prime.

It is a super-2 number, since 2×1834561² = 6731228125442, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1834561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1834501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9360 + ... + 9553.

It is an arithmetic number, because the mean of its divisors is an integer number (463393).

2^1834561 is an apocalyptic number.

It is an amenable number.

1834561 is a deficient number, since it is larger than the sum of its proper divisors (19011).

1834561 is an equidigital number, since it uses as much as digits as its factorization.

1834561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19010.

The product of its digits is 2880, while the sum is 28.

The square root of 1834561 is about 1354.4596708651. The cubic root of 1834561 is about 122.4176539461.

The spelling of 1834561 in words is "one million, eight hundred thirty-four thousand, five hundred sixty-one".