385263161 has 2 divisors, whose sum is σ = 385263162. Its totient is φ = 385263160.

The previous prime is 385263149. The next prime is 385263167. The reversal of 385263161 is 161362583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201498025 + 183765136 = 14195^2 + 13556^2 .

It is a cyclic number.

It is not a de Polignac number, because 385263161 - 2¹⁴ = 385246777 is a prime.

It is equal to p_20591738 and since 385263161 and 20591738 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (385263167) 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, 192631580 + 192631581.

It is an arithmetic number, because the mean of its divisors is an integer number (192631581).

Almost surely, 2^385263161 is an apocalyptic number.

It is an amenable number.

385263161 is a deficient number, since it is larger than the sum of its proper divisors (1).

385263161 is an equidigital number, since it uses as much as digits as its factorization.

385263161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 385263161 is about 19628.1216880271. The cubic root of 385263161 is about 727.6443495129.

The spelling of 385263161 in words is "three hundred eighty-five million, two hundred sixty-three thousand, one hundred sixty-one".