18442322 has 4 divisors (see below), whose sum is σ = 27663486. Its totient is φ = 9221160.

The previous prime is 18442247. The next prime is 18442337. The reversal of 18442322 is 22324481.

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

It can be written as a sum of positive squares in only one way, i.e., 16248961 + 2193361 = 4031^2 + 1481^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18442291 and 18442300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4610579 + ... + 4610582.

Almost surely, 2^18442322 is an apocalyptic number.

18442322 is a deficient number, since it is larger than the sum of its proper divisors (9221164).

18442322 is an equidigital number, since it uses as much as digits as its factorization.

18442322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221163.

The product of its digits is 3072, while the sum is 26.

The square root of 18442322 is about 4294.4524680103. The cubic root of 18442322 is about 264.2034798724.

The spelling of 18442322 in words is "eighteen million, four hundred forty-two thousand, three hundred twenty-two".