1804194 has 80 divisors (see below), whose sum is σ = 4855488. Its totient is φ = 489888.

The previous prime is 1804139. The next prime is 1804199. The reversal of 1804194 is 4914081.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41937 + ... + 41979.

2^1804194 is an apocalyptic number.

1804194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1804194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2427744).

1804194 is an abundant number, since it is smaller than the sum of its proper divisors (3051294).

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

1804194 is a wasteful number, since it uses less digits than its factorization.

1804194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1804194 is about 1343.2028886211. The cubic root of 1804194 is about 121.7384435003.

The spelling of 1804194 in words is "one million, eight hundred four thousand, one hundred ninety-four".