1818200000200 has 48 divisors (see below), whose sum is σ = 4269169651860. Its totient is φ = 720079200000.

The previous prime is 1818200000173. The next prime is 1818200000219. The reversal of 1818200000200 is 20000028181.

It can be written as a sum of positive squares in 6 ways, for example, as 748394549604 + 1069805450596 = 865098^2 + 1034314^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44984751 + ... + 45025150.

Almost surely, 2^{1818200000200} is an apocalyptic number.

1818200000200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1818200000200 is an abundant number, since it is smaller than the sum of its proper divisors (2450969651660).

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

1818200000200 is a wasteful number, since it uses less digits than its factorization.

1818200000200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90010018 (or 90010009 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1818200000200 its reverse (20000028181), we get a palindrome (1838200028381).

The spelling of 1818200000200 in words is "one trillion, eight hundred eighteen billion, two hundred million, two hundred", and thus it is an aban number.