180861041 has 2 divisors, whose sum is σ = 180861042. Its totient is φ = 180861040.

The previous prime is 180861007. The next prime is 180861047. The reversal of 180861041 is 140168081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166306816 + 14554225 = 12896^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 180861041 - 2¹⁸ = 180598897 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 180860995 and 180861013.

It is not a weakly prime, because it can be changed into another prime (180861047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90430520 + 90430521.

It is an arithmetic number, because the mean of its divisors is an integer number (90430521).

Almost surely, 2^180861041 is an apocalyptic number.

It is an amenable number.

180861041 is a deficient number, since it is larger than the sum of its proper divisors (1).

180861041 is an equidigital number, since it uses as much as digits as its factorization.

180861041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 180861041 is about 13448.4586849200. The cubic root of 180861041 is about 565.5204862541.

The spelling of 180861041 in words is "one hundred eighty million, eight hundred sixty-one thousand, forty-one".