385738841 has 2 divisors, whose sum is σ = 385738842. Its totient is φ = 385738840.

The previous prime is 385738781. The next prime is 385738861. The reversal of 385738841 is 148837583.

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., 374035600 + 11703241 = 19340^2 + 3421^2 .

It is a cyclic number.

It is not a de Polignac number, because 385738841 - 2⁶ = 385738777 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 (385738861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192869420 + 192869421.

It is an arithmetic number, because the mean of its divisors is an integer number (192869421).

Almost surely, 2^385738841 is an apocalyptic number.

It is an amenable number.

385738841 is a deficient number, since it is larger than the sum of its proper divisors (1).

385738841 is an equidigital number, since it uses as much as digits as its factorization.

385738841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 385738841 is about 19640.2352582651. The cubic root of 385738841 is about 727.9436977198.

The spelling of 385738841 in words is "three hundred eighty-five million, seven hundred thirty-eight thousand, eight hundred forty-one".