386243774369 has 2 divisors, whose sum is σ = 386243774370. Its totient is φ = 386243774368.

The previous prime is 386243774309. The next prime is 386243774377. The reversal of 386243774369 is 963477342683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385500666769 + 743107600 = 620887^2 + 27260^2 .

It is a cyclic number.

It is not a de Polignac number, because 386243774369 - 2⁸ = 386243774113 is a prime.

It is a super-2 number, since 2×386243774369² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (386243774309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193121887184 + 193121887185.

It is an arithmetic number, because the mean of its divisors is an integer number (193121887185).

Almost surely, 2^386243774369 is an apocalyptic number.

It is an amenable number.

386243774369 is a deficient number, since it is larger than the sum of its proper divisors (1).

386243774369 is an equidigital number, since it uses as much as digits as its factorization.

386243774369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109734912, while the sum is 62.

The spelling of 386243774369 in words is "three hundred eighty-six billion, two hundred forty-three million, seven hundred seventy-four thousand, three hundred sixty-nine".