1843381 has 4 divisors (see below), whose sum is σ = 1923552. Its totient is φ = 1763212.

The previous prime is 1843357. The next prime is 1843421. The reversal of 1843381 is 1833481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1843381 - 2⁵ = 1843349 is a prime.

It is a super-2 number, since 2×1843381² = 6796107022322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1843321) 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, 40051 + ... + 40096.

It is an arithmetic number, because the mean of its divisors is an integer number (480888).

2^1843381 is an apocalyptic number.

It is an amenable number.

1843381 is a deficient number, since it is larger than the sum of its proper divisors (80171).

1843381 is an equidigital number, since it uses as much as digits as its factorization.

1843381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80170.

The product of its digits is 2304, while the sum is 28.

The square root of 1843381 is about 1357.7116777873. The cubic root of 1843381 is about 122.6135224199.

The spelling of 1843381 in words is "one million, eight hundred forty-three thousand, three hundred eighty-one".