8238613709 has 2 divisors, whose sum is σ = 8238613710. Its totient is φ = 8238613708.

The previous prime is 8238613699. The next prime is 8238613717. The reversal of 8238613709 is 9073168328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8186268484 + 52345225 = 90478^2 + 7235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8238613709 is a prime.

It is a super-2 number, since 2×8238613709² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8238613309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4119306854 + 4119306855.

It is an arithmetic number, because the mean of its divisors is an integer number (4119306855).

Almost surely, 2^8238613709 is an apocalyptic number.

It is an amenable number.

8238613709 is a deficient number, since it is larger than the sum of its proper divisors (1).

8238613709 is an equidigital number, since it uses as much as digits as its factorization.

8238613709 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 47.

The square root of 8238613709 is about 90766.8095120678. The cubic root of 8238613709 is about 2019.6899917192.

The spelling of 8238613709 in words is "eight billion, two hundred thirty-eight million, six hundred thirteen thousand, seven hundred nine".