1830109 has 4 divisors (see below), whose sum is σ = 1832860. Its totient is φ = 1827360.

The previous prime is 1830089. The next prime is 1830113. The reversal of 1830109 is 9010381.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 727609 + 1102500 = 853^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830109 - 2⁵ = 1830077 is a prime.

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

It is a Duffinian number.

1830109 is a lucky number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1830109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1830119) 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, 319 + ... + 1939.

It is an arithmetic number, because the mean of its divisors is an integer number (458215).

2^1830109 is an apocalyptic number.

It is an amenable number.

1830109 is a deficient number, since it is larger than the sum of its proper divisors (2751).

1830109 is a wasteful number, since it uses less digits than its factorization.

1830109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1830109 is about 1352.8152128062. The cubic root of 1830109 is about 122.3185485197.

The spelling of 1830109 in words is "one million, eight hundred thirty thousand, one hundred nine".