18248317 has 2 divisors, whose sum is σ = 18248318. Its totient is φ = 18248316.

The previous prime is 18248309. The next prime is 18248357. The reversal of 18248317 is 71384281.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12916836 + 5331481 = 3594^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 18248317 - 2³ = 18248309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18248357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124158 + 9124159.

It is an arithmetic number, because the mean of its divisors is an integer number (9124159).

Almost surely, 2^18248317 is an apocalyptic number.

It is an amenable number.

18248317 is a deficient number, since it is larger than the sum of its proper divisors (1).

18248317 is an equidigital number, since it uses as much as digits as its factorization.

18248317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 18248317 is about 4271.8048878665. The cubic root of 18248317 is about 263.2737779472.

The spelling of 18248317 in words is "eighteen million, two hundred forty-eight thousand, three hundred seventeen".