16885161 has 6 divisors (see below), whose sum is σ = 24389690. Its totient is φ = 11256768.

The previous prime is 16885159. The next prime is 16885171. The reversal of 16885161 is 16158861.

It can be written as a sum of positive squares in only one way, i.e., 8590761 + 8294400 = 2931^2 + 2880^2 .

It is not a de Polignac number, because 16885161 - 2¹ = 16885159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16885171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 938056 + ... + 938073.

Almost surely, 2^16885161 is an apocalyptic number.

It is an amenable number.

16885161 is a deficient number, since it is larger than the sum of its proper divisors (7504529).

16885161 is a wasteful number, since it uses less digits than its factorization.

16885161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876135 (or 1876132 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 16885161 is about 4109.1557527064. The cubic root of 16885161 is about 256.5478633478.

The spelling of 16885161 in words is "sixteen million, eight hundred eighty-five thousand, one hundred sixty-one".