18048313 has 2 divisors, whose sum is σ = 18048314. Its totient is φ = 18048312.

The previous prime is 18048299. The next prime is 18048319. The reversal of 18048313 is 31384081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18045504 + 2809 = 4248^2 + 53^2 .

It is an emirp because it is prime and its reverse (31384081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18048313 - 2⁵ = 18048281 is a prime.

It is not a weakly prime, because it can be changed into another prime (18048319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9024156 + 9024157.

It is an arithmetic number, because the mean of its divisors is an integer number (9024157).

Almost surely, 2^18048313 is an apocalyptic number.

It is an amenable number.

18048313 is a deficient number, since it is larger than the sum of its proper divisors (1).

18048313 is an equidigital number, since it uses as much as digits as its factorization.

18048313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 18048313 is about 4248.3306133115. The cubic root of 18048313 is about 262.3084038028.

The spelling of 18048313 in words is "eighteen million, forty-eight thousand, three hundred thirteen".