18130313 has 8 divisors (see below), whose sum is σ = 20207520. Its totient is φ = 16165440.

The previous prime is 18130309. The next prime is 18130349. The reversal of 18130313 is 31303181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18130313 - 2² = 18130309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18130363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27743 + ... + 28388.

It is an arithmetic number, because the mean of its divisors is an integer number (2525940).

Almost surely, 2^18130313 is an apocalyptic number.

It is an amenable number.

18130313 is a deficient number, since it is larger than the sum of its proper divisors (2077207).

18130313 is a wasteful number, since it uses less digits than its factorization.

18130313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56167.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 18130313 is about 4257.9705259666. The cubic root of 18130313 is about 262.7050576113.

Adding to 18130313 its reverse (31303181), we get a palindrome (49433494).

The spelling of 18130313 in words is "eighteen million, one hundred thirty thousand, three hundred thirteen".