18222067 has 4 divisors (see below), whose sum is σ = 18645880. Its totient is φ = 17798256.

The previous prime is 18222059. The next prime is 18222097. The reversal of 18222067 is 76022281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76022281 = 7151 ⋅10631.

It is a cyclic number.

It is not a de Polignac number, because 18222067 - 2³ = 18222059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18222037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211842 + ... + 211927.

It is an arithmetic number, because the mean of its divisors is an integer number (4661470).

Almost surely, 2^18222067 is an apocalyptic number.

18222067 is a deficient number, since it is larger than the sum of its proper divisors (423813).

18222067 is an equidigital number, since it uses as much as digits as its factorization.

18222067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423812.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18222067 is about 4268.7313103544. The cubic root of 18222067 is about 263.1474785723.

The spelling of 18222067 in words is "eighteen million, two hundred twenty-two thousand, sixty-seven".