4639638528 has 440 divisors, whose sum is σ = 16216563264. Its totient is φ = 1293926400.

The previous prime is 4639638527. The next prime is 4639638593. The reversal of 4639638528 is 8258369364.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4639638527) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35417023 + ... + 35417153.

Almost surely, 2^4639638528 is an apocalyptic number.

4639638528 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 4639638528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8108281632).

4639638528 is an abundant number, since it is smaller than the sum of its proper divisors (11576924736).

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

4639638528 is a wasteful number, since it uses less digits than its factorization.

4639638528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 204 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The square root of 4639638528 is about 68114.8921161885. The cubic root of 4639638528 is about 1667.8668699709.

The spelling of 4639638528 in words is "four billion, six hundred thirty-nine million, six hundred thirty-eight thousand, five hundred twenty-eight".