4639380768 has 144 divisors (see below), whose sum is σ = 14727769056. Its totient is φ = 1373137920.

The previous prime is 4639380751. The next prime is 4639380791. The reversal of 4639380768 is 8670839364.

It is a Cunningham number, because it is equal to 68113²-1.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119196 + ... + 153252.

It is an arithmetic number, because the mean of its divisors is an integer number (102276174).

Almost surely, 2^4639380768 is an apocalyptic number.

4639380768 is a gapful number since it is divisible by the number (48) 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 4639380768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7363884528).

4639380768 is an abundant number, since it is smaller than the sum of its proper divisors (10088388288).

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

4639380768 is a wasteful number, since it uses less digits than its factorization.

4639380768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34127 (or 34116 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The square root of 4639380768 is about 68112.9999926593. Note that the first 5 decimals coincide. The cubic root of 4639380768 is about 1667.8359826993.

The spelling of 4639380768 in words is "four billion, six hundred thirty-nine million, three hundred eighty thousand, seven hundred sixty-eight".