18248273 has 2 divisors, whose sum is σ = 18248274. Its totient is φ = 18248272.

The previous prime is 18248261. The next prime is 18248281. The reversal of 18248273 is 37284281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16589329 + 1658944 = 4073^2 + 1288^2 .

It is a cyclic number.

It is not a de Polignac number, because 18248273 - 2¹⁶ = 18182737 is a prime.

It is not a weakly prime, because it can be changed into another prime (18248233) 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 as a sum of consecutive naturals, namely, 9124136 + 9124137.

It is an arithmetic number, because the mean of its divisors is an integer number (9124137).

Almost surely, 2^18248273 is an apocalyptic number.

It is an amenable number.

18248273 is a deficient number, since it is larger than the sum of its proper divisors (1).

18248273 is an equidigital number, since it uses as much as digits as its factorization.

18248273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The square root of 18248273 is about 4271.7997378154. The cubic root of 18248273 is about 263.2735663467.

The spelling of 18248273 in words is "eighteen million, two hundred forty-eight thousand, two hundred seventy-three".