8380538609 has 2 divisors, whose sum is σ = 8380538610. Its totient is φ = 8380538608.

The previous prime is 8380538549. The next prime is 8380538657. The reversal of 8380538609 is 9068350838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8378656225 + 1882384 = 91535^2 + 1372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8380538609 is a prime.

It is not a weakly prime, because it can be changed into another prime (8380538809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4190269304 + 4190269305.

It is an arithmetic number, because the mean of its divisors is an integer number (4190269305).

Almost surely, 2^8380538609 is an apocalyptic number.

It is an amenable number.

8380538609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8380538609 is an equidigital number, since it uses as much as digits as its factorization.

8380538609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 8380538609 is about 91545.2817407866. The cubic root of 8380538609 is about 2031.2216197704.

The spelling of 8380538609 in words is "eight billion, three hundred eighty million, five hundred thirty-eight thousand, six hundred nine".