18297002 has 4 divisors (see below), whose sum is σ = 27445506. Its totient is φ = 9148500.

The previous prime is 18297001. The next prime is 18297043. The reversal of 18297002 is 20079281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20079281 = 29 ⋅692389.

It can be written as a sum of positive squares in only one way, i.e., 17901361 + 395641 = 4231^2 + 629^2 .

It is not an unprimeable number, because it can be changed into a prime (18297001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574249 + ... + 4574252.

Almost surely, 2^18297002 is an apocalyptic number.

18297002 is a deficient number, since it is larger than the sum of its proper divisors (9148504).

18297002 is an equidigital number, since it uses as much as digits as its factorization.

18297002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9148503.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 18297002 is about 4277.4995032145. The cubic root of 18297002 is about 263.5077009273.

The spelling of 18297002 in words is "eighteen million, two hundred ninety-seven thousand, two".