18841420480 has 56 divisors (see below), whose sum is σ = 44881385472. Its totient is φ = 7534006272.

The previous prime is 18841420457. The next prime is 18841420511. The reversal of 18841420480 is 8402414881.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 7 ways as a sum of consecutive naturals, for example, 1138344 + ... + 1154776.

It is an arithmetic number, because the mean of its divisors is an integer number (801453312).

Almost surely, 2^18841420480 is an apocalyptic number.

18841420480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18841420480 is an abundant number, since it is smaller than the sum of its proper divisors (26039964992).

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

18841420480 is a wasteful number, since it uses less digits than its factorization.

18841420480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20033 (or 20023 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 18841420480 in words is "eighteen billion, eight hundred forty-one million, four hundred twenty thousand, four hundred eighty".