4678621309 has 2 divisors, whose sum is σ = 4678621310. Its totient is φ = 4678621308.

The previous prime is 4678621303. The next prime is 4678621333. The reversal of 4678621309 is 9031268764.

4678621309 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., 4667895684 + 10725625 = 68322^2 + 3275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4678621309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4678621303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2339310654 + 2339310655.

It is an arithmetic number, because the mean of its divisors is an integer number (2339310655).

Almost surely, 2^4678621309 is an apocalyptic number.

It is an amenable number.

4678621309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4678621309 is an equidigital number, since it uses as much as digits as its factorization.

4678621309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 4678621309 is about 68400.4481637365. The cubic root of 4678621309 is about 1672.5250516586.

The spelling of 4678621309 in words is "four billion, six hundred seventy-eight million, six hundred twenty-one thousand, three hundred nine".