1818453820208 has 20 divisors (see below), whose sum is σ = 3526448557728. Its totient is φ = 908402579520.

The previous prime is 1818453820189. The next prime is 1818453820229. The reversal of 1818453820208 is 8020283548181.

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, 51502463 + ... + 51537758.

Almost surely, 2^{1818453820208} is an apocalyptic number.

It is an amenable number.

1818453820208 is a deficient number, since it is larger than the sum of its proper divisors (1707994737520).

1818453820208 is a wasteful number, since it uses less digits than its factorization.

1818453820208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103041332 (or 103041326 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 50.

The spelling of 1818453820208 in words is "one trillion, eight hundred eighteen billion, four hundred fifty-three million, eight hundred twenty thousand, two hundred eight".