1818877864808 has 64 divisors (see below), whose sum is σ = 3587029920000. Its totient is φ = 862981284352.

The previous prime is 1818877864789. The next prime is 1818877864829. The reversal of 1818877864808 is 8084687788181.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22138541 + ... + 22220547.

It is an arithmetic number, because the mean of its divisors is an integer number (56047342500).

Almost surely, 2^{1818877864808} is an apocalyptic number.

It is an amenable number.

1818877864808 is a deficient number, since it is larger than the sum of its proper divisors (1768152055192).

1818877864808 is a wasteful number, since it uses less digits than its factorization.

1818877864808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82994 (or 82990 counting only the distinct ones).

The product of its (nonzero) digits is 308281344, while the sum is 74.

The spelling of 1818877864808 in words is "one trillion, eight hundred eighteen billion, eight hundred seventy-seven million, eight hundred sixty-four thousand, eight hundred eight".