19084951680 has 128 divisors (see below), whose sum is σ = 61149669120. Its totient is φ = 5062852608.

The previous prime is 19084951673. The next prime is 19084951681. The reversal of 19084951680 is 8615948091.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (19084951681) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 344809 + ... + 396311.

It is an arithmetic number, because the mean of its divisors is an integer number (477731790).

Almost surely, 2^19084951680 is an apocalyptic number.

19084951680 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 19084951680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30574834560).

19084951680 is an abundant number, since it is smaller than the sum of its proper divisors (42064717440).

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

19084951680 is a wasteful number, since it uses less digits than its factorization.

19084951680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51718 (or 51706 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 19084951680 in words is "nineteen billion, eighty-four million, nine hundred fifty-one thousand, six hundred eighty".