180840073 has 2 divisors, whose sum is σ = 180840074. Its totient is φ = 180840072.

The previous prime is 180840071. The next prime is 180840089. The reversal of 180840073 is 370048081.

It is a happy number.

180840073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 60016009 = 10992^2 + 7747^2 .

It is a cyclic number.

It is not a de Polignac number, because 180840073 - 2¹ = 180840071 is a prime.

Together with 180840071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (180840071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90420036 + 90420037.

It is an arithmetic number, because the mean of its divisors is an integer number (90420037).

Almost surely, 2^180840073 is an apocalyptic number.

It is an amenable number.

180840073 is a deficient number, since it is larger than the sum of its proper divisors (1).

180840073 is an equidigital number, since it uses as much as digits as its factorization.

180840073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 180840073 is about 13447.6790934347. The cubic root of 180840073 is about 565.4986310004.

The spelling of 180840073 in words is "one hundred eighty million, eight hundred forty thousand, seventy-three".