11946161 has 2 divisors, whose sum is σ = 11946162. Its totient is φ = 11946160.

The previous prime is 11946139. The next prime is 11946163. The reversal of 11946161 is 16164911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 2825761 = 3020^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 11946161 - 2¹⁸ = 11684017 is a prime.

Together with 11946163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11946163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973080 + 5973081.

It is an arithmetic number, because the mean of its divisors is an integer number (5973081).

Almost surely, 2^11946161 is an apocalyptic number.

It is an amenable number.

11946161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946161 is an equidigital number, since it uses as much as digits as its factorization.

11946161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 11946161 is about 3456.3218889450. The cubic root of 11946161 is about 228.5999447867.

The spelling of 11946161 in words is "eleven million, nine hundred forty-six thousand, one hundred sixty-one".