1800466 has 4 divisors (see below), whose sum is σ = 2700702. Its totient is φ = 900232.

The previous prime is 1800451. The next prime is 1800473. The reversal of 1800466 is 6640081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1766241 + 34225 = 1329^2 + 185^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1800466.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 450115 + ... + 450118.

2^1800466 is an apocalyptic number.

1800466 is a deficient number, since it is larger than the sum of its proper divisors (900236).

1800466 is an equidigital number, since it uses as much as digits as its factorization.

1800466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900235.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1800466 is about 1341.8144432074. The cubic root of 1800466 is about 121.6545364358.

The spelling of 1800466 in words is "one million, eight hundred thousand, four hundred sixty-six".