4613630621 has 2 divisors, whose sum is σ = 4613630622. Its totient is φ = 4613630620.

The previous prime is 4613630617. The next prime is 4613630627. The reversal of 4613630621 is 1260363164.

4613630621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3493992100 + 1119638521 = 59110^2 + 33461^2 .

It is a cyclic number.

It is not a de Polignac number, because 4613630621 - 2² = 4613630617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4613630627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2306815310 + 2306815311.

It is an arithmetic number, because the mean of its divisors is an integer number (2306815311).

Almost surely, 2^4613630621 is an apocalyptic number.

It is an amenable number.

4613630621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4613630621 is an equidigital number, since it uses as much as digits as its factorization.

4613630621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 4613630621 is about 67923.7117728412. The cubic root of 4613630621 is about 1664.7445698094.

Adding to 4613630621 its reverse (1260363164), we get a palindrome (5873993785).

The spelling of 4613630621 in words is "four billion, six hundred thirteen million, six hundred thirty thousand, six hundred twenty-one".