1830065 has 4 divisors (see below), whose sum is σ = 2196084. Its totient is φ = 1464048.

The previous prime is 1830053. The next prime is 1830071. The reversal of 1830065 is 5600381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5600381 = 131 ⋅42751.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 628849 = 1096^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830065 - 2¹⁰ = 1829041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1830065.

It is an unprimeable number.

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, 183002 + ... + 183011.

It is an arithmetic number, because the mean of its divisors is an integer number (549021).

2^1830065 is an apocalyptic number.

It is an amenable number.

1830065 is a deficient number, since it is larger than the sum of its proper divisors (366019).

1830065 is an equidigital number, since it uses as much as digits as its factorization.

1830065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366018.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1830065 is about 1352.7989503248. The cubic root of 1830065 is about 122.3175682394.

The spelling of 1830065 in words is "one million, eight hundred thirty thousand, sixty-five".