1080703781 has 2 divisors, whose sum is σ = 1080703782. Its totient is φ = 1080703780.

The previous prime is 1080703739. The next prime is 1080703817. The reversal of 1080703781 is 1873070801.

Together with next prime (1080703817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954501025 + 126202756 = 30895^2 + 11234^2 .

It is a cyclic number.

It is not a de Polignac number, because 1080703781 - 2¹⁰ = 1080702757 is a prime.

It is a super-3 number, since 3×1080703781³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1080703081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540351890 + 540351891.

It is an arithmetic number, because the mean of its divisors is an integer number (540351891).

Almost surely, 2^1080703781 is an apocalyptic number.

It is an amenable number.

1080703781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080703781 is an equidigital number, since it uses as much as digits as its factorization.

1080703781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 1080703781 is about 32874.0593933880. The cubic root of 1080703781 is about 1026.2083804630.

The spelling of 1080703781 in words is "one billion, eighty million, seven hundred three thousand, seven hundred eighty-one".