8104235609 has 2 divisors, whose sum is σ = 8104235610. Its totient is φ = 8104235608.

The previous prime is 8104235539. The next prime is 8104235617. The reversal of 8104235609 is 9065324018.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8103600400 + 635209 = 90020^2 + 797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8104235609 is a prime.

It is not a weakly prime, because it can be changed into another prime (8104235669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052117804 + 4052117805.

It is an arithmetic number, because the mean of its divisors is an integer number (4052117805).

Almost surely, 2^8104235609 is an apocalyptic number.

It is an amenable number.

8104235609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8104235609 is an equidigital number, since it uses as much as digits as its factorization.

8104235609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 8104235609 is about 90023.5280857177. The cubic root of 8104235609 is about 2008.6488455722.

The spelling of 8104235609 in words is "eight billion, one hundred four million, two hundred thirty-five thousand, six hundred nine".