18184022 has 4 divisors (see below), whose sum is σ = 27276036. Its totient is φ = 9092010.

The previous prime is 18184021. The next prime is 18184027. The reversal of 18184022 is 22048181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22048181 = 569 ⋅38749.

It is a junction number, because it is equal to n+sod(n) for n = 18183982 and 18184000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18184021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4546004 + ... + 4546007.

It is an arithmetic number, because the mean of its divisors is an integer number (6819009).

Almost surely, 2^18184022 is an apocalyptic number.

18184022 is a deficient number, since it is larger than the sum of its proper divisors (9092014).

18184022 is an equidigital number, since it uses as much as digits as its factorization.

18184022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092013.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18184022 is about 4264.2727398702. The cubic root of 18184022 is about 262.9642132052.

The spelling of 18184022 in words is "eighteen million, one hundred eighty-four thousand, twenty-two".