18667843548 has 48 divisors (see below), whose sum is σ = 46313648640. Its totient is φ = 5832058624.

The previous prime is 18667843477. The next prime is 18667843573. The reversal of 18667843548 is 84534876681.

It is a junction number, because it is equal to n+sod(n) for n = 18667843491 and 18667843500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142686 + ... + 240197.

It is an arithmetic number, because the mean of its divisors is an integer number (964867680).

Almost surely, 2^18667843548 is an apocalyptic number.

It is an amenable number.

18667843548 is an abundant number, since it is smaller than the sum of its proper divisors (27645805092).

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

18667843548 is a wasteful number, since it uses less digits than its factorization.

18667843548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383146 (or 383144 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 60.

The spelling of 18667843548 in words is "eighteen billion, six hundred sixty-seven million, eight hundred forty-three thousand, five hundred forty-eight".