387738242849 has 2 divisors, whose sum is σ = 387738242850. Its totient is φ = 387738242848.

The previous prime is 387738242831. The next prime is 387738242863. The reversal of 387738242849 is 948242837783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299873426449 + 87864816400 = 547607^2 + 296420^2 .

It is a cyclic number.

It is not a de Polignac number, because 387738242849 - 2²⁸ = 387469807393 is a prime.

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 (387738244849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193869121424 + 193869121425.

It is an arithmetic number, because the mean of its divisors is an integer number (193869121425).

Almost surely, 2^387738242849 is an apocalyptic number.

It is an amenable number.

387738242849 is a deficient number, since it is larger than the sum of its proper divisors (1).

387738242849 is an equidigital number, since it uses as much as digits as its factorization.

387738242849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130056192, while the sum is 65.

The spelling of 387738242849 in words is "three hundred eighty-seven billion, seven hundred thirty-eight million, two hundred forty-two thousand, eight hundred forty-nine".