1804938 has 8 divisors (see below), whose sum is σ = 3609888. Its totient is φ = 601644.

The previous prime is 1804937. The next prime is 1804939. The reversal of 1804938 is 8394081.

It is an interprime number because it is at equal distance from previous prime (1804937) and next prime (1804939).

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

1804938 is an admirable number.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1804899 and 1804908.

It is not an unprimeable number, because it can be changed into a prime (1804937) 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, 150406 + ... + 150417.

It is an arithmetic number, because the mean of its divisors is an integer number (451236).

2^1804938 is an apocalyptic number.

1804938 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.

1804938 is a wasteful number, since it uses less digits than its factorization.

1804938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300828.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1804938 is about 1343.4798100455. The cubic root of 1804938 is about 121.7551750629.

The spelling of 1804938 in words is "one million, eight hundred four thousand, nine hundred thirty-eight".