180612149 has 2 divisors, whose sum is σ = 180612150. Its totient is φ = 180612148.

The previous prime is 180612121. The next prime is 180612163. The reversal of 180612149 is 941216081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167702500 + 12909649 = 12950^2 + 3593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180612149 is a prime.

It is a super-3 number, since 3×180612149³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180612349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90306074 + 90306075.

It is an arithmetic number, because the mean of its divisors is an integer number (90306075).

Almost surely, 2^180612149 is an apocalyptic number.

It is an amenable number.

180612149 is a deficient number, since it is larger than the sum of its proper divisors (1).

180612149 is an equidigital number, since it uses as much as digits as its factorization.

180612149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 180612149 is about 13439.2019480325. The cubic root of 180612149 is about 565.2609534115.

The spelling of 180612149 in words is "one hundred eighty million, six hundred twelve thousand, one hundred forty-nine".