18181818184648 has 128 divisors (see below), whose sum is σ = 38540844316800. Its totient is φ = 7990272000000.

The previous prime is 18181818184637. The next prime is 18181818184657. The reversal of 18181818184648 is 84648181818181.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62768148 + ... + 63057148.

It is an arithmetic number, because the mean of its divisors is an integer number (301100346225).

Almost surely, 2^{18181818184648} is an apocalyptic number.

It is an amenable number.

18181818184648 is an abundant number, since it is smaller than the sum of its proper divisors (20359026132152).

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

18181818184648 is a wasteful number, since it uses less digits than its factorization.

18181818184648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289391 (or 289387 counting only the distinct ones).

The product of its digits is 25165824, while the sum is 67.

The spelling of 18181818184648 in words is "eighteen trillion, one hundred eighty-one billion, eight hundred eighteen million, one hundred eighty-four thousand, six hundred forty-eight".