1820200200200 has 24 divisors (see below), whose sum is σ = 4231965465930. Its totient is φ = 728080080000.

The previous prime is 1820200200193. The next prime is 1820200200233. The reversal of 1820200200200 is 20020020281.

It can be written as a sum of positive squares in 3 ways, for example, as 962098109956 + 858102090244 = 980866^2 + 926338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4550500301 + ... + 4550500700.

Almost surely, 2^{1820200200200} is an apocalyptic number.

1820200200200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1820200200200 is an abundant number, since it is smaller than the sum of its proper divisors (2411765265730).

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

1820200200200 is a wasteful number, since it uses less digits than its factorization.

1820200200200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101001017 (or 9101001008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1820200200200 its reverse (20020020281), we get a palindrome (1840220220481).

The spelling of 1820200200200 in words is "one trillion, eight hundred twenty billion, two hundred million, two hundred thousand, two hundred".