1818198356200 has 48 divisors (see below), whose sum is σ = 4233126250080. Its totient is φ = 726278900160.

The previous prime is 1818198356159. The next prime is 1818198356257. The reversal of 1818198356200 is 26538918181.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6107002 + ... + 6397801.

It is an arithmetic number, because the mean of its divisors is an integer number (88190130210).

Almost surely, 2^{1818198356200} is an apocalyptic number.

1818198356200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1818198356200 is an abundant number, since it is smaller than the sum of its proper divisors (2414927893880).

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

1818198356200 is a wasteful number, since it uses less digits than its factorization.

1818198356200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505546 (or 12505537 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

The spelling of 1818198356200 in words is "one trillion, eight hundred eighteen billion, one hundred ninety-eight million, three hundred fifty-six thousand, two hundred".