18768382280 has 16 divisors (see below), whose sum is σ = 42228860220. Its totient is φ = 7507352896.

The previous prime is 18768382277. The next prime is 18768382289. The reversal of 18768382280 is 8228386781.

It can be written as a sum of positive squares in 2 ways, for example, as 18361876036 + 406506244 = 135506^2 + 20162^2 .

It is not an unprimeable number, because it can be changed into a prime (18768382289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234604739 + ... + 234604818.

Almost surely, 2^18768382280 is an apocalyptic number.

18768382280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18768382280 is an abundant number, since it is smaller than the sum of its proper divisors (23460477940).

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

18768382280 is a wasteful number, since it uses less digits than its factorization.

18768382280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469209568 (or 469209564 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 18768382280 in words is "eighteen billion, seven hundred sixty-eight million, three hundred eighty-two thousand, two hundred eighty".