4091941920 has 384 divisors, whose sum is σ = 14657448960. Its totient is φ = 950906880.

The previous prime is 4091941879. The next prime is 4091941943. The reversal of 4091941920 is 291491904.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15211546 + ... + 15211814.

It is an arithmetic number, because the mean of its divisors is an integer number (38170440).

Almost surely, 2^4091941920 is an apocalyptic number.

4091941920 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 4091941920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7328724480).

4091941920 is an abundant number, since it is smaller than the sum of its proper divisors (10565507040).

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

4091941920 is a wasteful number, since it uses less digits than its factorization.

4091941920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 4091941920 is about 63968.2883935470. The cubic root of 4091941920 is about 1599.4714295692.

It can be divided in two parts, 409194 and 1920, that added together give a palindrome (411114).

The spelling of 4091941920 in words is "four billion, ninety-one million, nine hundred forty-one thousand, nine hundred twenty".