18192214 has 4 divisors (see below), whose sum is σ = 27288324. Its totient is φ = 9096106.

The previous prime is 18192191. The next prime is 18192217. The reversal of 18192214 is 41229181.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18192217) 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 as a sum of consecutive naturals, namely, 4548052 + ... + 4548055.

It is an arithmetic number, because the mean of its divisors is an integer number (6822081).

Almost surely, 2^18192214 is an apocalyptic number.

18192214 is a deficient number, since it is larger than the sum of its proper divisors (9096110).

18192214 is an equidigital number, since it uses as much as digits as its factorization.

18192214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9096109.

The product of its digits is 1152, while the sum is 28.

The square root of 18192214 is about 4265.2331706485. The cubic root of 18192214 is about 263.0036962089.

The spelling of 18192214 in words is "eighteen million, one hundred ninety-two thousand, two hundred fourteen".