1206650281 has 2 divisors, whose sum is σ = 1206650282. Its totient is φ = 1206650280.

The previous prime is 1206650279. The next prime is 1206650329. The reversal of 1206650281 is 1820566021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1125938025 + 80712256 = 33555^2 + 8984^2 .

It is an emirp because it is prime and its reverse (1820566021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1206650281 - 2¹ = 1206650279 is a prime.

It is a super-2 number, since 2×1206650281² = 2912009801274757922, which contains 22 as substring.

Together with 1206650279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1206650201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603325140 + 603325141.

It is an arithmetic number, because the mean of its divisors is an integer number (603325141).

Almost surely, 2^1206650281 is an apocalyptic number.

It is an amenable number.

1206650281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206650281 is an equidigital number, since it uses as much as digits as its factorization.

1206650281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1206650281 is about 34736.8720670126. The cubic root of 1206650281 is about 1064.6180034346.

The spelling of 1206650281 in words is "one billion, two hundred six million, six hundred fifty thousand, two hundred eighty-one".