1830438 has 20 divisors (see below), whose sum is σ = 4101900. Its totient is φ = 610092.

The previous prime is 1830431. The next prime is 1830443. The reversal of 1830438 is 8340381.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1830431) 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 9 ways as a sum of consecutive naturals, for example, 5488 + ... + 5811.

It is an arithmetic number, because the mean of its divisors is an integer number (205095).

2^1830438 is an apocalyptic number.

1830438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1830438 is an abundant number, since it is smaller than the sum of its proper divisors (2271462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1830438 is a wasteful number, since it uses less digits than its factorization.

1830438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11313 (or 11304 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1830438 is about 1352.9368056195. The cubic root of 1830438 is about 122.3258778447.

The spelling of 1830438 in words is "one million, eight hundred thirty thousand, four hundred thirty-eight".