18782945280 has 544 divisors, whose sum is σ = 73231989120. Its totient is φ = 4529848320.

The previous prime is 18782945263. The next prime is 18782945303. The reversal of 18782945280 is 8254928781.

18782945280 is a `hidden beast` number, since 1 + 8 + 78 + 294 + 5 + 280 = 666.

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

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 31 ways as a sum of consecutive naturals, for example, 97320864 + ... + 97321056.

Almost surely, 2^18782945280 is an apocalyptic number.

18782945280 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 18782945280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36615994560).

18782945280 is an abundant number, since it is smaller than the sum of its proper divisors (54449043840).

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

18782945280 is an equidigital number, since it uses as much as digits as its factorization.

18782945280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 18782945280 in words is "eighteen billion, seven hundred eighty-two million, nine hundred forty-five thousand, two hundred eighty".