1800366 has 16 divisors (see below), whose sum is σ = 3621888. Its totient is φ = 596600.

The previous prime is 1800361. The next prime is 1800377. The reversal of 1800366 is 6630081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (226368).

2^1800366 is an apocalyptic number.

1800366 is an abundant number, since it is smaller than the sum of its proper divisors (1821522).

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

1800366 is a wasteful number, since it uses less digits than its factorization.

1800366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1800366 is about 1341.7771797135. Note that the first 3 decimals coincide. The cubic root of 1800366 is about 121.6522841154.

The spelling of 1800366 in words is "one million, eight hundred thousand, three hundred sixty-six".