1800998200 has 24 divisors (see below), whose sum is σ = 4187321280. Its totient is φ = 720399200.

The previous prime is 1800998183. The next prime is 1800998203. The reversal of 1800998200 is 28990081.

It is a self number, because there is not a number n which added to its sum of digits gives 1800998200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800998203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4502296 + ... + 4502695.

It is an arithmetic number, because the mean of its divisors is an integer number (174471720).

Almost surely, 2^1800998200 is an apocalyptic number.

1800998200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1800998200 is an abundant number, since it is smaller than the sum of its proper divisors (2386323080).

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

1800998200 is a wasteful number, since it uses less digits than its factorization.

1800998200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9005007 (or 9004998 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1800998200 is about 42438.1691405273. The cubic root of 1800998200 is about 1216.6652188219.

It can be divided in two parts, 1800 and 998200, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 1800998200 in words is "one billion, eight hundred million, nine hundred ninety-eight thousand, two hundred".