1800196 has 12 divisors (see below), whose sum is σ = 3160780. Its totient is φ = 897120.

The previous prime is 1800191. The next prime is 1800199. The reversal of 1800196 is 6910081.

It can be written as a sum of positive squares in 2 ways, for example, as 287296 + 1512900 = 536^2 + 1230^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1800196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800191) 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, 1150 + ... + 2218.

2^1800196 is an apocalyptic number.

It is an amenable number.

1800196 is a deficient number, since it is larger than the sum of its proper divisors (1360584).

1800196 is a wasteful number, since it uses less digits than its factorization.

1800196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1800196 is about 1341.7138293988. The cubic root of 1800196 is about 121.6484549793.

The spelling of 1800196 in words is "one million, eight hundred thousand, one hundred ninety-six".