18846945475133 has 2 divisors, whose sum is σ = 18846945475134. Its totient is φ = 18846945475132.

The previous prime is 18846945475079. The next prime is 18846945475207. The reversal of 18846945475133 is 33157454964881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16491696634009 + 2355248841124 = 4060997^2 + 1534682^2 .

It is a cyclic number.

It is not a de Polignac number, because 18846945475133 - 2²⁶ = 18846878366269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18846935475133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9423472737566 + 9423472737567.

It is an arithmetic number, because the mean of its divisors is an integer number (9423472737567).

Almost surely, 2^{18846945475133} is an apocalyptic number.

It is an amenable number.

18846945475133 is a deficient number, since it is larger than the sum of its proper divisors (1).

18846945475133 is an equidigital number, since it uses as much as digits as its factorization.

18846945475133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 348364800, while the sum is 68.

The spelling of 18846945475133 in words is "eighteen trillion, eight hundred forty-six billion, nine hundred forty-five million, four hundred seventy-five thousand, one hundred thirty-three".