19018241984 has 56 divisors (see below), whose sum is σ = 43144805760. Its totient is φ = 8148001536.

The previous prime is 19018241969. The next prime is 19018241993. The reversal of 19018241984 is 48914281091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2014427 + ... + 2023845.

It is an arithmetic number, because the mean of its divisors is an integer number (770442960).

Almost surely, 2^19018241984 is an apocalyptic number.

19018241984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19018241984 is an abundant number, since it is smaller than the sum of its proper divisors (24126563776).

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

19018241984 is an equidigital number, since it uses as much as digits as its factorization.

19018241984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13945 (or 13935 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 19018241984 in words is "nineteen billion, eighteen million, two hundred forty-one thousand, nine hundred eighty-four".