4638689792 has 160 divisors (see below), whose sum is σ = 10818593280. Its totient is φ = 1964666880.

The previous prime is 4638689779. The next prime is 4638689821. The reversal of 4638689792 is 2979868364.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7169213 + ... + 7169859.

It is an arithmetic number, because the mean of its divisors is an integer number (67616208).

Almost surely, 2^4638689792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4638689792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5409296640).

4638689792 is an abundant number, since it is smaller than the sum of its proper divisors (6179903488).

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

4638689792 is a wasteful number, since it uses less digits than its factorization.

4638689792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 746 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 62.

The square root of 4638689792 is about 68107.9275268305. The cubic root of 4638689792 is about 1667.7531776935.

The spelling of 4638689792 in words is "four billion, six hundred thirty-eight million, six hundred eighty-nine thousand, seven hundred ninety-two".