18680496648 has 64 divisors (see below), whose sum is σ = 53943693120. Its totient is φ = 5327769600.

The previous prime is 18680496599. The next prime is 18680496671. The reversal of 18680496648 is 84669408681.

It is a junction number, because it is equal to n+sod(n) for n = 18680496591 and 18680496600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076673 + ... + 2085648.

It is an arithmetic number, because the mean of its divisors is an integer number (842870205).

Almost surely, 2^18680496648 is an apocalyptic number.

It is an amenable number.

18680496648 is an abundant number, since it is smaller than the sum of its proper divisors (35263196472).

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

18680496648 is a wasteful number, since it uses less digits than its factorization.

18680496648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162358 (or 4162354 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 60.

The spelling of 18680496648 in words is "eighteen billion, six hundred eighty million, four hundred ninety-six thousand, six hundred forty-eight".