1830442 has 4 divisors (see below), whose sum is σ = 2745666. Its totient is φ = 915220.

The previous prime is 1830431. The next prime is 1830443. The reversal of 1830442 is 2440381.

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

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 168921 = 1289^2 + 411^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1830443) 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 as a sum of consecutive naturals, namely, 457609 + ... + 457612.

2^1830442 is an apocalyptic number.

1830442 is a deficient number, since it is larger than the sum of its proper divisors (915224).

1830442 is an equidigital number, since it uses as much as digits as its factorization.

1830442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915223.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1830442 is about 1352.9382838844. The cubic root of 1830442 is about 122.3259669496.

The spelling of 1830442 in words is "one million, eight hundred thirty thousand, four hundred forty-two".