14218861 has 2 divisors, whose sum is σ = 14218862. Its totient is φ = 14218860.

The previous prime is 14218849. The next prime is 14218877. The reversal of 14218861 is 16881241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11222500 + 2996361 = 3350^2 + 1731^2 .

It is a cyclic number.

It is not a de Polignac number, because 14218861 - 2⁵ = 14218829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14218811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7109430 + 7109431.

It is an arithmetic number, because the mean of its divisors is an integer number (7109431).

Almost surely, 2^14218861 is an apocalyptic number.

It is an amenable number.

14218861 is a deficient number, since it is larger than the sum of its proper divisors (1).

14218861 is an equidigital number, since it uses as much as digits as its factorization.

14218861 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 14218861 is about 3770.7905006775. The cubic root of 14218861 is about 242.2636575005.

The spelling of 14218861 in words is "fourteen million, two hundred eighteen thousand, eight hundred sixty-one".