18222514 has 4 divisors (see below), whose sum is σ = 27333774. Its totient is φ = 9111256.

The previous prime is 18222473. The next prime is 18222541. The reversal of 18222514 is 41522281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41522281 = 197 ⋅210773.

It can be written as a sum of positive squares in only one way, i.e., 12723489 + 5499025 = 3567^2 + 2345^2 .

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 as a sum of consecutive naturals, namely, 4555627 + ... + 4555630.

Almost surely, 2^18222514 is an apocalyptic number.

18222514 is a deficient number, since it is larger than the sum of its proper divisors (9111260).

18222514 is an equidigital number, since it uses as much as digits as its factorization.

18222514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111259.

The product of its digits is 1280, while the sum is 25.

The square root of 18222514 is about 4268.7836675100. The cubic root of 18222514 is about 263.1496302850.

Adding to 18222514 its reverse (41522281), we get a palindrome (59744795).

The spelling of 18222514 in words is "eighteen million, two hundred twenty-two thousand, five hundred fourteen".