1800996 has 12 divisors (see below), whose sum is σ = 4202352. Its totient is φ = 600328.

The previous prime is 1800979. The next prime is 1801003. The reversal of 1800996 is 6990081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75030 + ... + 75053.

It is an arithmetic number, because the mean of its divisors is an integer number (350196).

2^1800996 is an apocalyptic number.

It is an amenable number.

1800996 is an abundant number, since it is smaller than the sum of its proper divisors (2401356).

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

1800996 is a wasteful number, since it uses less digits than its factorization.

1800996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150090 (or 150088 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1800996 is about 1342.0119224508. The cubic root of 1800996 is about 121.6664723418. Note that the first 3 decimals are identical.

The spelling of 1800996 in words is "one million, eight hundred thousand, nine hundred ninety-six".