18560849 has 2 divisors, whose sum is σ = 18560850. Its totient is φ = 18560848.

The previous prime is 18560837. The next prime is 18560851. The reversal of 18560849 is 94806581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13690000 + 4870849 = 3700^2 + 2207^2 .

It is an emirp because it is prime and its reverse (94806581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18560849 - 2⁸ = 18560593 is a prime.

Together with 18560851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18560819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9280424 + 9280425.

It is an arithmetic number, because the mean of its divisors is an integer number (9280425).

Almost surely, 2^18560849 is an apocalyptic number.

It is an amenable number.

18560849 is a deficient number, since it is larger than the sum of its proper divisors (1).

18560849 is an equidigital number, since it uses as much as digits as its factorization.

18560849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 18560849 is about 4308.2303791696. The cubic root of 18560849 is about 264.7682749435.

The spelling of 18560849 in words is "eighteen million, five hundred sixty thousand, eight hundred forty-nine".