4638533 has 2 divisors, whose sum is σ = 4638534. Its totient is φ = 4638532.

The previous prime is 4638511. The next prime is 4638541. The reversal of 4638533 is 3358364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 2211169 = 1558^2 + 1487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4638533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4638533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4638553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319266 + 2319267.

It is an arithmetic number, because the mean of its divisors is an integer number (2319267).

Almost surely, 2^4638533 is an apocalyptic number.

It is an amenable number.

4638533 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638533 is an equidigital number, since it uses as much as digits as its factorization.

4638533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 4638533 is about 2153.7253771082. The cubic root of 4638533 is about 166.7734386949.

The spelling of 4638533 in words is "four million, six hundred thirty-eight thousand, five hundred thirty-three".