18847385456 has 40 divisors (see below), whose sum is σ = 37707003264. Its totient is φ = 9116743680.

The previous prime is 18847385429. The next prime is 18847385503. The reversal of 18847385456 is 65458374881.

It is a junction number, because it is equal to n+sod(n) for n = 18847385395 and 18847385404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3009080 + ... + 3015336.

Almost surely, 2^18847385456 is an apocalyptic number.

18847385456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18847385456 is an abundant number, since it is smaller than the sum of its proper divisors (18859617808).

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

18847385456 is a wasteful number, since it uses less digits than its factorization.

18847385456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12369 (or 12363 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 59.

The spelling of 18847385456 in words is "eighteen billion, eight hundred forty-seven million, three hundred eighty-five thousand, four hundred fifty-six".