4049268640 has 96 divisors (see below), whose sum is σ = 9676243584. Its totient is φ = 1601233920.

The previous prime is 4049268617. The next prime is 4049268647. The reversal of 4049268640 is 468629404.

It is not an unprimeable number, because it can be changed into a prime (4049268647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8314477 + ... + 8314963.

It is an arithmetic number, because the mean of its divisors is an integer number (100794204).

Almost surely, 2^4049268640 is an apocalyptic number.

4049268640 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 4049268640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4838121792).

4049268640 is an abundant number, since it is smaller than the sum of its proper divisors (5626974944).

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

4049268640 is a wasteful number, since it uses less digits than its factorization.

4049268640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 4049268640 is about 63633.8639405152. The cubic root of 4049268640 is about 1593.8918991124.

The spelling of 4049268640 in words is "four billion, forty-nine million, two hundred sixty-eight thousand, six hundred forty".