385824913 has 2 divisors, whose sum is σ = 385824914. Its totient is φ = 385824912.

The previous prime is 385824893. The next prime is 385824917. The reversal of 385824913 is 319428583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351637504 + 34187409 = 18752^2 + 5847^2 .

It is an emirp because it is prime and its reverse (319428583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385824913 - 2²¹ = 383727761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385824913.

It is not a weakly prime, because it can be changed into another prime (385824917) 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, 192912456 + 192912457.

It is an arithmetic number, because the mean of its divisors is an integer number (192912457).

Almost surely, 2^385824913 is an apocalyptic number.

It is an amenable number.

385824913 is a deficient number, since it is larger than the sum of its proper divisors (1).

385824913 is an equidigital number, since it uses as much as digits as its factorization.

385824913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 385824913 is about 19642.4263521592. The cubic root of 385824913 is about 727.9978370352.

The spelling of 385824913 in words is "three hundred eighty-five million, eight hundred twenty-four thousand, nine hundred thirteen".