18452013 has 8 divisors (see below), whose sum is σ = 24629088. Its totient is φ = 12288144.

The previous prime is 18451999. The next prime is 18452029. The reversal of 18452013 is 31025481.

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

It is not a de Polignac number, because 18452013 - 2⁵ = 18451981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18452113) 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, 631 + ... + 6107.

It is an arithmetic number, because the mean of its divisors is an integer number (3078636).

Almost surely, 2^18452013 is an apocalyptic number.

It is an amenable number.

18452013 is a deficient number, since it is larger than the sum of its proper divisors (6177075).

18452013 is a wasteful number, since it uses less digits than its factorization.

18452013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18452013 is about 4295.5806359560. The cubic root of 18452013 is about 264.2497493096.

Adding to 18452013 its reverse (31025481), we get a palindrome (49477494).

The spelling of 18452013 in words is "eighteen million, four hundred fifty-two thousand, thirteen".