18245909108953 has 2 divisors, whose sum is σ = 18245909108954. Its totient is φ = 18245909108952.

The previous prime is 18245909108909. The next prime is 18245909109019. The reversal of 18245909108953 is 35980190954281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10445998528729 + 7799910580224 = 3232027^2 + 2792832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18245909108953 is a prime.

It is not a weakly prime, because it can be changed into another prime (18245909108353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122954554476 + 9122954554477.

It is an arithmetic number, because the mean of its divisors is an integer number (9122954554477).

Almost surely, 2^{18245909108953} is an apocalyptic number.

It is an amenable number.

18245909108953 is a deficient number, since it is larger than the sum of its proper divisors (1).

18245909108953 is an equidigital number, since it uses as much as digits as its factorization.

18245909108953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 64.

The spelling of 18245909108953 in words is "eighteen trillion, two hundred forty-five billion, nine hundred nine million, one hundred eight thousand, nine hundred fifty-three".