4523533638 has 64 divisors (see below), whose sum is σ = 10361856960. Its totient is φ = 1304174592.

The previous prime is 4523533633. The next prime is 4523533639. The reversal of 4523533638 is 8363353254.

It is a self number, because there is not a number n which added to its sum of digits gives 4523533638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4523533633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296206 + ... + 311102.

It is an arithmetic number, because the mean of its divisors is an integer number (161904015).

Almost surely, 2^4523533638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4523533638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5180928480).

4523533638 is an abundant number, since it is smaller than the sum of its proper divisors (5838323322).

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

4523533638 is a wasteful number, since it uses less digits than its factorization.

4523533638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15161.

The product of its digits is 777600, while the sum is 42.

The square root of 4523533638 is about 67257.2199693089. The cubic root of 4523533638 is about 1653.8366352816.

The spelling of 4523533638 in words is "four billion, five hundred twenty-three million, five hundred thirty-three thousand, six hundred thirty-eight".