1027781263 has 2 divisors, whose sum is σ = 1027781264. Its totient is φ = 1027781262.

The previous prime is 1027781233. The next prime is 1027781297. The reversal of 1027781263 is 3621877201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1027781263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1027781233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513890631 + 513890632.

It is an arithmetic number, because the mean of its divisors is an integer number (513890632).

Almost surely, 2^1027781263 is an apocalyptic number.

1027781263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1027781263 is an equidigital number, since it uses as much as digits as its factorization.

1027781263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1027781263 is about 32059.0277924955. The cubic root of 1027781263 is about 1009.1759651303.

The spelling of 1027781263 in words is "one billion, twenty-seven million, seven hundred eighty-one thousand, two hundred sixty-three".