4320703638 has 72 divisors (see below), whose sum is σ = 9768710952. Its totient is φ = 1379866752.

The previous prime is 4320703631. The next prime is 4320703657. The reversal of 4320703638 is 8363070234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320703631) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1649706 + ... + 1652322.

It is an arithmetic number, because the mean of its divisors is an integer number (135676541).

Almost surely, 2^4320703638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4320703638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4884355476).

4320703638 is an abundant number, since it is smaller than the sum of its proper divisors (5448007314).

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

4320703638 is a wasteful number, since it uses less digits than its factorization.

4320703638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 4320703638 is about 65732.0594382984. The cubic root of 4320703638 is about 1628.7389895724.

The spelling of 4320703638 in words is "four billion, three hundred twenty million, seven hundred three thousand, six hundred thirty-eight".