385655161 has 2 divisors, whose sum is σ = 385655162. Its totient is φ = 385655160.

The previous prime is 385655147. The next prime is 385655201. The reversal of 385655161 is 161556583.

It is an a-pointer prime, because the next prime (385655201) can be obtained adding 385655161 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358155625 + 27499536 = 18925^2 + 5244^2 .

It is an emirp because it is prime and its reverse (161556583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385655161 - 2¹⁷ = 385524089 is a prime.

It is not a weakly prime, because it can be changed into another prime (385653161) 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, 192827580 + 192827581.

It is an arithmetic number, because the mean of its divisors is an integer number (192827581).

Almost surely, 2^385655161 is an apocalyptic number.

It is an amenable number.

385655161 is a deficient number, since it is larger than the sum of its proper divisors (1).

385655161 is an equidigital number, since it uses as much as digits as its factorization.

385655161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 40.

The square root of 385655161 is about 19638.1048220036. The cubic root of 385655161 is about 727.8910552517.

The spelling of 385655161 in words is "three hundred eighty-five million, six hundred fifty-five thousand, one hundred sixty-one".