492240257393 has 2 divisors, whose sum is σ = 492240257394. Its totient is φ = 492240257392.

The previous prime is 492240257387. The next prime is 492240257407. The reversal of 492240257393 is 393752042294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479283443809 + 12956813584 = 692303^2 + 113828^2 .

It is a cyclic number.

It is not a de Polignac number, because 492240257393 - 2⁸ = 492240257137 is a prime.

It is not a weakly prime, because it can be changed into another prime (492240257303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246120128696 + 246120128697.

It is an arithmetic number, because the mean of its divisors is an integer number (246120128697).

Almost surely, 2^492240257393 is an apocalyptic number.

It is an amenable number.

492240257393 is a deficient number, since it is larger than the sum of its proper divisors (1).

492240257393 is an equidigital number, since it uses as much as digits as its factorization.

492240257393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 492240257393 in words is "four hundred ninety-two billion, two hundred forty million, two hundred fifty-seven thousand, three hundred ninety-three".