4191108840 has 96 divisors (see below), whose sum is σ = 13635933480. Its totient is φ = 1116412416.

The previous prime is 4191108833. The next prime is 4191108841. The reversal of 4191108840 is 488011914.

It can be written as a sum of positive squares in 4 ways, for example, as 4173418404 + 17690436 = 64602^2 + 4206^2 .

It is a super-2 number, since 2×4191108840² = 35130786617452291200, which contains 22 as substring.

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 = 4191108795 and 4191108804.

It is not an unprimeable number, because it can be changed into a prime (4191108841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353082 + ... + 364758.

Almost surely, 2^4191108840 is an apocalyptic number.

4191108840 is a gapful number since it is divisible by the number (40) 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 4191108840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6817966740).

4191108840 is an abundant number, since it is smaller than the sum of its proper divisors (9444824640).

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

4191108840 is a wasteful number, since it uses less digits than its factorization.

4191108840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12691 (or 12684 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 4191108840 is about 64738.7738530782. The cubic root of 4191108840 is about 1612.2893296074.

The spelling of 4191108840 in words is "four billion, one hundred ninety-one million, one hundred eight thousand, eight hundred forty".