18466313 has 4 divisors (see below), whose sum is σ = 18814788. Its totient is φ = 18117840.

The previous prime is 18466303. The next prime is 18466333. The reversal of 18466313 is 31366481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7463824 + 11002489 = 2732^2 + 3317^2 .

It is a cyclic number.

It is not a de Polignac number, because 18466313 - 2⁶ = 18466249 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18466313.

It is not an unprimeable number, because it can be changed into a prime (18466303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174158 + ... + 174263.

It is an arithmetic number, because the mean of its divisors is an integer number (4703697).

Almost surely, 2^18466313 is an apocalyptic number.

It is an amenable number.

18466313 is a deficient number, since it is larger than the sum of its proper divisors (348475).

18466313 is an equidigital number, since it uses as much as digits as its factorization.

18466313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348474.

The product of its digits is 10368, while the sum is 32.

The square root of 18466313 is about 4297.2448149948. The cubic root of 18466313 is about 264.3179947213.

The spelling of 18466313 in words is "eighteen million, four hundred sixty-six thousand, three hundred thirteen".