385668293 has 2 divisors, whose sum is σ = 385668294. Its totient is φ = 385668292.

The previous prime is 385668167. The next prime is 385668299. The reversal of 385668293 is 392866583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281669089 + 103999204 = 16783^2 + 10198^2 .

It is a cyclic number.

It is not a de Polignac number, because 385668293 - 2⁸ = 385668037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385668299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192834146 + 192834147.

It is an arithmetic number, because the mean of its divisors is an integer number (192834147).

Almost surely, 2^385668293 is an apocalyptic number.

It is an amenable number.

385668293 is a deficient number, since it is larger than the sum of its proper divisors (1).

385668293 is an equidigital number, since it uses as much as digits as its factorization.

385668293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 50.

The square root of 385668293 is about 19638.4391691397. The cubic root of 385668293 is about 727.8993169993.

The spelling of 385668293 in words is "three hundred eighty-five million, six hundred sixty-eight thousand, two hundred ninety-three".