284985161 has 16 divisors (see below), whose sum is σ = 318764160. Its totient is φ = 253198080.

The previous prime is 284985143. The next prime is 284985221. The reversal of 284985161 is 161589482.

It is a cyclic number.

It is not a de Polignac number, because 284985161 - 2⁶ = 284985097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284985131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99035 + ... + 101871.

It is an arithmetic number, because the mean of its divisors is an integer number (19922760).

Almost surely, 2^284985161 is an apocalyptic number.

It is an amenable number.

284985161 is a deficient number, since it is larger than the sum of its proper divisors (33778999).

284985161 is a wasteful number, since it uses less digits than its factorization.

284985161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184.

The product of its digits is 138240, while the sum is 44.

The square root of 284985161 is about 16881.5035171634. The cubic root of 284985161 is about 658.0730149049.

The spelling of 284985161 in words is "two hundred eighty-four million, nine hundred eighty-five thousand, one hundred sixty-one".