4785457309 has 2 divisors, whose sum is σ = 4785457310. Its totient is φ = 4785457308.

The previous prime is 4785457273. The next prime is 4785457337. The reversal of 4785457309 is 9037545874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3818869209 + 966588100 = 61797^2 + 31090^2 .

It is a cyclic number.

It is not a de Polignac number, because 4785457309 - 2⁷ = 4785457181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4785457709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2392728654 + 2392728655.

It is an arithmetic number, because the mean of its divisors is an integer number (2392728655).

Almost surely, 2^4785457309 is an apocalyptic number.

It is an amenable number.

4785457309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4785457309 is an equidigital number, since it uses as much as digits as its factorization.

4785457309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The square root of 4785457309 is about 69176.9998554433. Note that the first 3 decimals coincide. The cubic root of 4785457309 is about 1685.1600265970.

The spelling of 4785457309 in words is "four billion, seven hundred eighty-five million, four hundred fifty-seven thousand, three hundred nine".