18222195 has 16 divisors (see below), whose sum is σ = 29706912. Its totient is φ = 9534720.

The previous prime is 18222173. The next prime is 18222223. The reversal of 18222195 is 59122281.

It is not a de Polignac number, because 18222195 - 2¹⁵ = 18189427 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 10666 + ... + 12255.

It is an arithmetic number, because the mean of its divisors is an integer number (1856682).

Almost surely, 2^18222195 is an apocalyptic number.

18222195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18222195 is a deficient number, since it is larger than the sum of its proper divisors (11484717).

18222195 is a wasteful number, since it uses less digits than its factorization.

18222195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22982.

The product of its digits is 2880, while the sum is 30.

The square root of 18222195 is about 4268.7463030731. The cubic root of 18222195 is about 263.1480947263.

The spelling of 18222195 in words is "eighteen million, two hundred twenty-two thousand, one hundred ninety-five".