18630013 has 8 divisors (see below), whose sum is σ = 19660320. Its totient is φ = 17604720.

The previous prime is 18629999. The next prime is 18630037. The reversal of 18630013 is 31003681.

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 18630013 - 2¹³ = 18621821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18634013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8331 + ... + 10327.

It is an arithmetic number, because the mean of its divisors is an integer number (2457540).

Almost surely, 2^18630013 is an apocalyptic number.

It is an amenable number.

18630013 is a deficient number, since it is larger than the sum of its proper divisors (1030307).

18630013 is a wasteful number, since it uses less digits than its factorization.

18630013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 18630013 is about 4316.2498769186. The cubic root of 18630013 is about 265.0967393335.

Adding to 18630013 its reverse (31003681), we get a palindrome (49633694).

The spelling of 18630013 in words is "eighteen million, six hundred thirty thousand, thirteen".