18030002 has 4 divisors (see below), whose sum is σ = 27045006. Its totient is φ = 9015000.

The previous prime is 18029971. The next prime is 18030041. The reversal of 18030002 is 20003081.

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., 13097161 + 4932841 = 3619^2 + 2221^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4507499 + ... + 4507502.

Almost surely, 2^18030002 is an apocalyptic number.

18030002 is a deficient number, since it is larger than the sum of its proper divisors (9015004).

18030002 is an equidigital number, since it uses as much as digits as its factorization.

18030002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9015003.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 18030002 is about 4246.1749846185. The cubic root of 18030002 is about 262.2196650484.

Adding to 18030002 its reverse (20003081), we get a palindrome (38033083).

The spelling of 18030002 in words is "eighteen million, thirty thousand, two".