12884161 has 2 divisors, whose sum is σ = 12884162. Its totient is φ = 12884160.

The previous prime is 12884159. The next prime is 12884171. The reversal of 12884161 is 16148821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8179600 + 4704561 = 2860^2 + 2169^2 .

It is a cyclic number.

It is not a de Polignac number, because 12884161 - 2¹ = 12884159 is a prime.

Together with 12884159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12884171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6442080 + 6442081.

It is an arithmetic number, because the mean of its divisors is an integer number (6442081).

Almost surely, 2^12884161 is an apocalyptic number.

It is an amenable number.

12884161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12884161 is an equidigital number, since it uses as much as digits as its factorization.

12884161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 31.

The square root of 12884161 is about 3589.4513508334. The cubic root of 12884161 is about 234.4329833666.

The spelling of 12884161 in words is "twelve million, eight hundred eighty-four thousand, one hundred sixty-one".