19841107140 has 120 divisors (see below), whose sum is σ = 62277978840. Its totient is φ = 5287928832.

The previous prime is 19841107129. The next prime is 19841107141. The reversal of 19841107140 is 4170114891.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42928704 + 19798178436 = 6552^2 + 140706^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19841107095 and 19841107104.

It is not an unprimeable number, because it can be changed into a prime (19841107141) 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 39 ways as a sum of consecutive naturals, for example, 5229084 + ... + 5232876.

It is an arithmetic number, because the mean of its divisors is an integer number (518983157).

Almost surely, 2^19841107140 is an apocalyptic number.

19841107140 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 19841107140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31138989420).

19841107140 is an abundant number, since it is smaller than the sum of its proper divisors (42436871700).

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

19841107140 is a wasteful number, since it uses less digits than its factorization.

19841107140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043 (or 7032 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 19841107140 in words is "nineteen billion, eight hundred forty-one million, one hundred seven thousand, one hundred forty".