180054156493 has 4 divisors (see below), whose sum is σ = 186262920540. Its totient is φ = 173845392448.

The previous prime is 180054156481. The next prime is 180054156509. The reversal of 180054156493 is 394651450081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31911535044 + 148142621449 = 178638^2 + 384893^2 .

It is a cyclic number.

It is not a de Polignac number, because 180054156493 - 2³⁷ = 42615203021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180054151493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104381980 + ... + 3104382037.

It is an arithmetic number, because the mean of its divisors is an integer number (46565730135).

Almost surely, 2^180054156493 is an apocalyptic number.

It is an amenable number.

180054156493 is a deficient number, since it is larger than the sum of its proper divisors (6208764047).

180054156493 is an equidigital number, since it uses as much as digits as its factorization.

180054156493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208764046.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 180054156493 in words is "one hundred eighty billion, fifty-four million, one hundred fifty-six thousand, four hundred ninety-three".