385775497313 has 2 divisors, whose sum is σ = 385775497314. Its totient is φ = 385775497312.

The previous prime is 385775497223. The next prime is 385775497333. The reversal of 385775497313 is 313794577583.

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., 239842329169 + 145933168144 = 489737^2 + 382012^2 .

It is a cyclic number.

It is not a de Polignac number, because 385775497313 - 2⁸ = 385775497057 is a prime.

It is not a weakly prime, because it can be changed into another prime (385775497333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192887748656 + 192887748657.

It is an arithmetic number, because the mean of its divisors is an integer number (192887748657).

Almost surely, 2^385775497313 is an apocalyptic number.

It is an amenable number.

385775497313 is a deficient number, since it is larger than the sum of its proper divisors (1).

385775497313 is an equidigital number, since it uses as much as digits as its factorization.

385775497313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66679200, while the sum is 62.

The spelling of 385775497313 in words is "three hundred eighty-five billion, seven hundred seventy-five million, four hundred ninety-seven thousand, three hundred thirteen".