16923161 has 2 divisors, whose sum is σ = 16923162. Its totient is φ = 16923160.

The previous prime is 16923139. The next prime is 16923163. The reversal of 16923161 is 16132961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14137600 + 2785561 = 3760^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 16923161 - 2¹⁰ = 16922137 is a prime.

Together with 16923163, 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 (16923163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8461580 + 8461581.

It is an arithmetic number, because the mean of its divisors is an integer number (8461581).

Almost surely, 2^16923161 is an apocalyptic number.

It is an amenable number.

16923161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16923161 is an equidigital number, since it uses as much as digits as its factorization.

16923161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 16923161 is about 4113.7769749951. The cubic root of 16923161 is about 256.7401725340.

The spelling of 16923161 in words is "sixteen million, nine hundred twenty-three thousand, one hundred sixty-one".