385284161 has 4 divisors (see below), whose sum is σ = 385416900. Its totient is φ = 385151424.

The previous prime is 385284157. The next prime is 385284173. The reversal of 385284161 is 161482583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161482583 = 269 ⋅600307.

It can be written as a sum of positive squares in 2 ways, for example, as 193738561 + 191545600 = 13919^2 + 13840^2 .

It is a cyclic number.

It is not a de Polignac number, because 385284161 - 2² = 385284157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385284131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61916 + ... + 67853.

It is an arithmetic number, because the mean of its divisors is an integer number (96354225).

Almost surely, 2^385284161 is an apocalyptic number.

It is an amenable number.

385284161 is a deficient number, since it is larger than the sum of its proper divisors (132739).

385284161 is a wasteful number, since it uses less digits than its factorization.

385284161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132738.

The product of its digits is 46080, while the sum is 38.

The square root of 385284161 is about 19628.6566274924. The cubic root of 385284161 is about 727.6575701331.

The spelling of 385284161 in words is "three hundred eighty-five million, two hundred eighty-four thousand, one hundred sixty-one".