1805366 has 16 divisors (see below), whose sum is σ = 2967840. Its totient is φ = 819840.

The previous prime is 1805359. The next prime is 1805369. The reversal of 1805366 is 6635081.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1805369) 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 7 ways as a sum of consecutive naturals, for example, 71 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (185490).

2^1805366 is an apocalyptic number.

1805366 is a deficient number, since it is larger than the sum of its proper divisors (1162474).

1805366 is a wasteful number, since it uses less digits than its factorization.

1805366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1805366 is about 1343.6390884460. The cubic root of 1805366 is about 121.7647981260.

The spelling of 1805366 in words is "one million, eight hundred five thousand, three hundred sixty-six".