18208447488 has 440 divisors, whose sum is σ = 67814719104. Its totient is φ = 4727808000.

The previous prime is 18208447487. The next prime is 18208447501. The reversal of 18208447488 is 88474480281.

18208447488 is a `hidden beast` number, since 1 + 82 + 0 + 84 + 4 + 7 + 488 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18208447487) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6385263 + ... + 6388113.

Almost surely, 2^18208447488 is an apocalyptic number.

18208447488 is a gapful number since it is divisible by the number (18) 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 18208447488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33907359552).

18208447488 is an abundant number, since it is smaller than the sum of its proper divisors (49606271616).

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

18208447488 is a wasteful number, since it uses less digits than its factorization.

18208447488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 3670016, while the sum is 54.

The spelling of 18208447488 in words is "eighteen billion, two hundred eight million, four hundred forty-seven thousand, four hundred eighty-eight".