18297074 has 4 divisors (see below), whose sum is σ = 27445614. Its totient is φ = 9148536.

The previous prime is 18297061. The next prime is 18297089. The reversal of 18297074 is 47079281.

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., 14115049 + 4182025 = 3757^2 + 2045^2 .

It is a super-2 number, since 2×18297074² = 669565833922952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574267 + ... + 4574270.

Almost surely, 2^18297074 is an apocalyptic number.

18297074 is a deficient number, since it is larger than the sum of its proper divisors (9148540).

18297074 is an equidigital number, since it uses as much as digits as its factorization.

18297074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148539.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 18297074 is about 4277.5079193381. The cubic root of 18297074 is about 263.5080465673.

The spelling of 18297074 in words is "eighteen million, two hundred ninety-seven thousand, seventy-four".