4081343640 has 256 divisors, whose sum is σ = 14130547200. Its totient is φ = 932659200.

The previous prime is 4081343639. The next prime is 4081343677. The reversal of 4081343640 is 463431804.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 8853010 + ... + 8853470.

It is an arithmetic number, because the mean of its divisors is an integer number (55197450).

Almost surely, 2^4081343640 is an apocalyptic number.

4081343640 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 4081343640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7065273600).

4081343640 is an abundant number, since it is smaller than the sum of its proper divisors (10049203560).

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

4081343640 is a wasteful number, since it uses less digits than its factorization.

4081343640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 4081343640 is about 63885.3945749731. The cubic root of 4081343640 is about 1598.0893390591.

The spelling of 4081343640 in words is "four billion, eighty-one million, three hundred forty-three thousand, six hundred forty".