1843994 has 8 divisors (see below), whose sum is σ = 2861460. Its totient is φ = 890176.

The previous prime is 1843993. The next prime is 1843997. The reversal of 1843994 is 4993481.

It can be written as a sum of positive squares in 2 ways, for example, as 1809025 + 34969 = 1345^2 + 187^2 .

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

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1843993) 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, 15839 + ... + 15954.

2^1843994 is an apocalyptic number.

1843994 is a deficient number, since it is larger than the sum of its proper divisors (1017466).

1843994 is a wasteful number, since it uses less digits than its factorization.

1843994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31824.

The product of its digits is 31104, while the sum is 38.

The square root of 1843994 is about 1357.9374065103. The cubic root of 1843994 is about 122.6271122600.

The spelling of 1843994 in words is "one million, eight hundred forty-three thousand, nine hundred ninety-four".