180085429 has 2 divisors, whose sum is σ = 180085430. Its totient is φ = 180085428.

The previous prime is 180085393. The next prime is 180085441. The reversal of 180085429 is 924580081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166358404 + 13727025 = 12898^2 + 3705^2 .

It is a cyclic number.

It is not a de Polignac number, because 180085429 - 2¹¹ = 180083381 is a prime.

It is a super-2 number, since 2×180085429² = 64861523476228082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180083429) 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 as a sum of consecutive naturals, namely, 90042714 + 90042715.

It is an arithmetic number, because the mean of its divisors is an integer number (90042715).

Almost surely, 2^180085429 is an apocalyptic number.

It is an amenable number.

180085429 is a deficient number, since it is larger than the sum of its proper divisors (1).

180085429 is an equidigital number, since it uses as much as digits as its factorization.

180085429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 180085429 is about 13419.5912381861. The cubic root of 180085429 is about 564.7109273865.

The spelling of 180085429 in words is "one hundred eighty million, eighty-five thousand, four hundred twenty-nine".