4638232013 has 8 divisors (see below), whose sum is σ = 4681638456. Its totient is φ = 4594867200.

The previous prime is 4638231973. The next prime is 4638232021. The reversal of 4638232013 is 3102328364.

It can be written as a sum of positive squares in 4 ways, for example, as 814417444 + 3823814569 = 28538^2 + 61837^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4638232013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638232033) 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, 241733 + ... + 260213.

It is an arithmetic number, because the mean of its divisors is an integer number (585204807).

Almost surely, 2^4638232013 is an apocalyptic number.

It is an amenable number.

4638232013 is a deficient number, since it is larger than the sum of its proper divisors (43406443).

4638232013 is a wasteful number, since it uses less digits than its factorization.

4638232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20815.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 4638232013 is about 68104.5667558351. The cubic root of 4638232013 is about 1667.6983139617.

The spelling of 4638232013 in words is "four billion, six hundred thirty-eight million, two hundred thirty-two thousand, thirteen".