193489826609 has 2 divisors, whose sum is σ = 193489826610. Its totient is φ = 193489826608.

The previous prime is 193489826597. The next prime is 193489826707. The reversal of 193489826609 is 906628984391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193472421025 + 17405584 = 439855^2 + 4172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193489826609 is a prime.

It is not a weakly prime, because it can be changed into another prime (193489826809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96744913304 + 96744913305.

It is an arithmetic number, because the mean of its divisors is an integer number (96744913305).

Almost surely, 2^193489826609 is an apocalyptic number.

It is an amenable number.

193489826609 is a deficient number, since it is larger than the sum of its proper divisors (1).

193489826609 is an equidigital number, since it uses as much as digits as its factorization.

193489826609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40310784, while the sum is 65.

The spelling of 193489826609 in words is "one hundred ninety-three billion, four hundred eighty-nine million, eight hundred twenty-six thousand, six hundred nine".