180073609 has 2 divisors, whose sum is σ = 180073610. Its totient is φ = 180073608.

The previous prime is 180073603. The next prime is 180073643. The reversal of 180073609 is 906370081.

It is an a-pointer prime, because the next prime (180073643) can be obtained adding 180073609 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112784400 + 67289209 = 10620^2 + 8203^2 .

It is a cyclic number.

It is not a de Polignac number, because 180073609 - 2⁵ = 180073577 is a prime.

It is not a weakly prime, because it can be changed into another prime (180073603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90036804 + 90036805.

It is an arithmetic number, because the mean of its divisors is an integer number (90036805).

Almost surely, 2^180073609 is an apocalyptic number.

It is an amenable number.

180073609 is a deficient number, since it is larger than the sum of its proper divisors (1).

180073609 is an equidigital number, since it uses as much as digits as its factorization.

180073609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 180073609 is about 13419.1508300637. The cubic root of 180073609 is about 564.6985720853.

The spelling of 180073609 in words is "one hundred eighty million, seventy-three thousand, six hundred nine".