18180675133 has 2 divisors, whose sum is σ = 18180675134. Its totient is φ = 18180675132.

The previous prime is 18180675119. The next prime is 18180675169. The reversal of 18180675133 is 33157608181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10485350404 + 7695324729 = 102398^2 + 87723^2 .

It is a cyclic number.

It is not a de Polignac number, because 18180675133 - 2⁹ = 18180674621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18180675133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18180675193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9090337566 + 9090337567.

It is an arithmetic number, because the mean of its divisors is an integer number (9090337567).

Almost surely, 2^18180675133 is an apocalyptic number.

It is an amenable number.

18180675133 is a deficient number, since it is larger than the sum of its proper divisors (1).

18180675133 is an equidigital number, since it uses as much as digits as its factorization.

18180675133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 18180675133 in words is "eighteen billion, one hundred eighty million, six hundred seventy-five thousand, one hundred thirty-three".