18626313 has 4 divisors (see below), whose sum is σ = 24835088. Its totient is φ = 12417540.

The previous prime is 18626299. The next prime is 18626347. The reversal of 18626313 is 31362681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18626313 - 2⁶ = 18626249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18626393) 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 in 3 ways as a sum of consecutive naturals, for example, 3104383 + ... + 3104388.

It is an arithmetic number, because the mean of its divisors is an integer number (6208772).

Almost surely, 2^18626313 is an apocalyptic number.

It is an amenable number.

18626313 is a deficient number, since it is larger than the sum of its proper divisors (6208775).

18626313 is an equidigital number, since it uses as much as digits as its factorization.

18626313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208774.

The product of its digits is 5184, while the sum is 30.

The square root of 18626313 is about 4315.8212428227. The cubic root of 18626313 is about 265.0791883907.

Adding to 18626313 its reverse (31362681), we get a palindrome (49988994).

The spelling of 18626313 in words is "eighteen million, six hundred twenty-six thousand, three hundred thirteen".