18555887960 has 16 divisors (see below), whose sum is σ = 41750748000. Its totient is φ = 7422355168.

The previous prime is 18555887927. The next prime is 18555887971. The reversal of 18555887960 is 6978855581.

It is a junction number, because it is equal to n+sod(n) for n = 18555887893 and 18555887902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231948560 + ... + 231948639.

It is an arithmetic number, because the mean of its divisors is an integer number (2609421750).

Almost surely, 2^18555887960 is an apocalyptic number.

18555887960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18555887960 is an abundant number, since it is smaller than the sum of its proper divisors (23194860040).

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

18555887960 is a wasteful number, since it uses less digits than its factorization.

18555887960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463897210 (or 463897206 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 62.

The spelling of 18555887960 in words is "eighteen billion, five hundred fifty-five million, eight hundred eighty-seven thousand, nine hundred sixty".