18297346 has 4 divisors (see below), whose sum is σ = 27446022. Its totient is φ = 9148672.

The previous prime is 18297313. The next prime is 18297359. The reversal of 18297346 is 64379281.

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., 13505625 + 4791721 = 3675^2 + 2189^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18297299 and 18297308.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574335 + ... + 4574338.

Almost surely, 2^18297346 is an apocalyptic number.

18297346 is a deficient number, since it is larger than the sum of its proper divisors (9148676).

18297346 is an equidigital number, since it uses as much as digits as its factorization.

18297346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9148675.

The product of its digits is 72576, while the sum is 40.

The square root of 18297346 is about 4277.5397134334. The cubic root of 18297346 is about 263.5093523104.

The spelling of 18297346 in words is "eighteen million, two hundred ninety-seven thousand, three hundred forty-six".