1830138 has 8 divisors (see below), whose sum is σ = 3660288. Its totient is φ = 610044.

The previous prime is 1830119. The next prime is 1830163. The reversal of 1830138 is 8310381.

It is a sphenic number, since it is the product of 3 distinct primes.

1830138 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152506 + ... + 152517.

It is an arithmetic number, because the mean of its divisors is an integer number (457536).

2^1830138 is an apocalyptic number.

1830138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1830138 is a wasteful number, since it uses less digits than its factorization.

1830138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305028.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1830138 is about 1352.8259311530. The cubic root of 1830138 is about 122.3191946049.

The spelling of 1830138 in words is "one million, eight hundred thirty thousand, one hundred thirty-eight".