180634506730789 has 2 divisors, whose sum is σ = 180634506730790. Its totient is φ = 180634506730788.

The previous prime is 180634506730787. The next prime is 180634506730819. The reversal of 180634506730789 is 987037605436081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179381824222500 + 1252682508289 = 13393350^2 + 1119233^2 .

It is a cyclic number.

It is not a de Polignac number, because 180634506730789 - 2¹ = 180634506730787 is a prime.

Together with 180634506730787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180634506730787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90317253365394 + 90317253365395.

It is an arithmetic number, because the mean of its divisors is an integer number (90317253365395).

Almost surely, 2^{180634506730789} is an apocalyptic number.

It is an amenable number.

180634506730789 is a deficient number, since it is larger than the sum of its proper divisors (1).

180634506730789 is an equidigital number, since it uses as much as digits as its factorization.

180634506730789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 180634506730789 in words is "one hundred eighty trillion, six hundred thirty-four billion, five hundred six million, seven hundred thirty thousand, seven hundred eighty-nine".