18844954560 has 560 divisors, whose sum is σ = 70811136000. Its totient is φ = 4750202880.

The previous prime is 18844954553. The next prime is 18844954603. The reversal of 18844954560 is 6545944881.

18844954560 is a `hidden beast` number, since 18 + 84 + 4 + 9 + 545 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18844954497 and 18844954506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 37765191 + ... + 37765689.

Almost surely, 2^18844954560 is an apocalyptic number.

18844954560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18844954560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35405568000).

18844954560 is an abundant number, since it is smaller than the sum of its proper divisors (51966181440).

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

18844954560 is a wasteful number, since it uses less digits than its factorization.

18844954560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 18844954560 in words is "eighteen billion, eight hundred forty-four million, nine hundred fifty-four thousand, five hundred sixty".