4638523 has 4 divisors (see below), whose sum is σ = 4642848. Its totient is φ = 4634200.

The previous prime is 4638511. The next prime is 4638533. The reversal of 4638523 is 3258364.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4638523 - 2¹³ = 4630331 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4¹⁰ + 6⁴ + 3⁵ + 8⁵ + 5⁹ + 2¹³ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4638533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (1160712).

Almost surely, 2^4638523 is an apocalyptic number.

4638523 is a deficient number, since it is larger than the sum of its proper divisors (4325).

4638523 is a wasteful number, since it uses less digits than its factorization.

4638523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324.

The product of its digits is 17280, while the sum is 31.

The square root of 4638523 is about 2153.7230555482. The cubic root of 4638523 is about 166.7733188484.

The spelling of 4638523 in words is "four million, six hundred thirty-eight thousand, five hundred twenty-three".