1071717391 has 2 divisors, whose sum is σ = 1071717392. Its totient is φ = 1071717390.

The previous prime is 1071717389. The next prime is 1071717431. The reversal of 1071717391 is 1937171701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1071717391 - 2¹ = 1071717389 is a prime.

It is a super-2 number, since 2×1071717391² = 2297156332343693762, which contains 22 as substring.

Together with 1071717389, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1071717391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071717341) 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, 535858695 + 535858696.

It is an arithmetic number, because the mean of its divisors is an integer number (535858696).

Almost surely, 2^1071717391 is an apocalyptic number.

1071717391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071717391 is an equidigital number, since it uses as much as digits as its factorization.

1071717391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9261, while the sum is 37.

The square root of 1071717391 is about 32737.0950299504. The cubic root of 1071717391 is about 1023.3560452070.

The spelling of 1071717391 in words is "one billion, seventy-one million, seven hundred seventeen thousand, three hundred ninety-one".