8342738309 has 2 divisors, whose sum is σ = 8342738310. Its totient is φ = 8342738308.

The previous prime is 8342738303. The next prime is 8342738317. The reversal of 8342738309 is 9038372438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7128424900 + 1214313409 = 84430^2 + 34847^2 .

It is a cyclic number.

It is not a de Polignac number, because 8342738309 - 2¹⁶ = 8342672773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8342738303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171369154 + 4171369155.

It is an arithmetic number, because the mean of its divisors is an integer number (4171369155).

Almost surely, 2^8342738309 is an apocalyptic number.

It is an amenable number.

8342738309 is a deficient number, since it is larger than the sum of its proper divisors (1).

8342738309 is an equidigital number, since it uses as much as digits as its factorization.

8342738309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 8342738309 is about 91338.5915645736. The cubic root of 8342738309 is about 2028.1630845985.

The spelling of 8342738309 in words is "eight billion, three hundred forty-two million, seven hundred thirty-eight thousand, three hundred nine".