1800802 has 8 divisors (see below), whose sum is σ = 2767212. Its totient is φ = 878400.

The previous prime is 1800787. The next prime is 1800803. The reversal of 1800802 is 2080081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 29241 = 1331^2 + 171^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1800802.

It is not an unprimeable number, because it can be changed into a prime (1800803) 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, 10899 + ... + 11062.

2^1800802 is an apocalyptic number.

1800802 is a deficient number, since it is larger than the sum of its proper divisors (966410).

1800802 is a wasteful number, since it uses less digits than its factorization.

1800802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22004.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1800802 is about 1341.9396409675. The cubic root of 1800802 is about 121.6621036215.

Adding to 1800802 its reverse (2080081), we get a palindrome (3880883).

The spelling of 1800802 in words is "one million, eight hundred thousand, eight hundred two".