18214346 has 4 divisors (see below), whose sum is σ = 27321522. Its totient is φ = 9107172.

The previous prime is 18214297. The next prime is 18214363. The reversal of 18214346 is 64341281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64341281 = 23 ⋅2797447.

It can be written as a sum of positive squares in only one way, i.e., 16362025 + 1852321 = 4045^2 + 1361^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4553585 + ... + 4553588.

Almost surely, 2^18214346 is an apocalyptic number.

18214346 is a deficient number, since it is larger than the sum of its proper divisors (9107176).

18214346 is an equidigital number, since it uses as much as digits as its factorization.

18214346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9107175.

The product of its digits is 4608, while the sum is 29.

The square root of 18214346 is about 4267.8268474717. The cubic root of 18214346 is about 263.1103066328.

The spelling of 18214346 in words is "eighteen million, two hundred fourteen thousand, three hundred forty-six".