1066180361 has 2 divisors, whose sum is σ = 1066180362. Its totient is φ = 1066180360.

The previous prime is 1066180343. The next prime is 1066180363. The reversal of 1066180361 is 1630816601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 939054736 + 127125625 = 30644^2 + 11275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066180361 - 2¹⁰ = 1066179337 is a prime.

It is a super-2 number, since 2×1066180361² = 2273481124364180642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1066180363, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1066180363) 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, 533090180 + 533090181.

It is an arithmetic number, because the mean of its divisors is an integer number (533090181).

Almost surely, 2^1066180361 is an apocalyptic number.

It is an amenable number.

1066180361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066180361 is an equidigital number, since it uses as much as digits as its factorization.

1066180361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1066180361 is about 32652.4173837099. The cubic root of 1066180361 is about 1021.5906109967.

Adding to 1066180361 its reverse (1630816601), we get a palindrome (2696996962).

The spelling of 1066180361 in words is "one billion, sixty-six million, one hundred eighty thousand, three hundred sixty-one".