4635638 has 16 divisors (see below), whose sum is σ = 7983360. Its totient is φ = 1977576.

The previous prime is 4635637. The next prime is 4635649. The reversal of 4635638 is 8365364.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4635598 and 4635607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4635637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3053 + ... + 4311.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

Almost surely, 2^4635638 is an apocalyptic number.

4635638 is a deficient number, since it is larger than the sum of its proper divisors (3347722).

4635638 is a wasteful number, since it uses less digits than its factorization.

4635638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531.

The product of its digits is 51840, while the sum is 35.

The square root of 4635638 is about 2153.0531809503. The cubic root of 4635638 is about 166.7387359427.

The spelling of 4635638 in words is "four million, six hundred thirty-five thousand, six hundred thirty-eight".