18881039360 has 44 divisors (see below), whose sum is σ = 45292380528. Its totient is φ = 7552413696.

The previous prime is 18881039339. The next prime is 18881039371. The reversal of 18881039360 is 6393018881.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838732 + ... + 1848971.

Almost surely, 2^18881039360 is an apocalyptic number.

18881039360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18881039360 is an abundant number, since it is smaller than the sum of its proper divisors (26411341168).

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

18881039360 is an equidigital number, since it uses as much as digits as its factorization.

18881039360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687728 (or 3687710 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 18881039360 in words is "eighteen billion, eight hundred eighty-one million, thirty-nine thousand, three hundred sixty".