1291463071 has 2 divisors, whose sum is σ = 1291463072. Its totient is φ = 1291463070.

The previous prime is 1291463053. The next prime is 1291463081. The reversal of 1291463071 is 1703641921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1291463071 - 2⁷ = 1291462943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291463011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645731535 + 645731536.

It is an arithmetic number, because the mean of its divisors is an integer number (645731536).

Almost surely, 2^1291463071 is an apocalyptic number.

1291463071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291463071 is an equidigital number, since it uses as much as digits as its factorization.

1291463071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1291463071 is about 35936.9318529003. The cubic root of 1291463071 is about 1088.9986232905.

The spelling of 1291463071 in words is "one billion, two hundred ninety-one million, four hundred sixty-three thousand, seventy-one".