18288829440 has 792 divisors, whose sum is σ = 76103202240. Its totient is φ = 3976888320.

The previous prime is 18288829423. The next prime is 18288829511. The reversal of 18288829440 is 4492888281.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 309980131 + ... + 309980189.

Almost surely, 2^18288829440 is an apocalyptic number.

18288829440 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 18288829440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38051601120).

18288829440 is an abundant number, since it is smaller than the sum of its proper divisors (57814372800).

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

18288829440 is a wasteful number, since it uses less digits than its factorization.

18288829440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 54.

The spelling of 18288829440 in words is "eighteen billion, two hundred eighty-eight million, eight hundred twenty-nine thousand, four hundred forty".