1968064871 has 2 divisors, whose sum is σ = 1968064872. Its totient is φ = 1968064870.

The previous prime is 1968064867. The next prime is 1968064883. The reversal of 1968064871 is 1784608691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1968064871 - 2² = 1968064867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1968064841) 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, 984032435 + 984032436.

It is an arithmetic number, because the mean of its divisors is an integer number (984032436).

Almost surely, 2^1968064871 is an apocalyptic number.

1968064871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968064871 is an equidigital number, since it uses as much as digits as its factorization.

1968064871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 1968064871 is about 44362.8771722484. The cubic root of 1968064871 is about 1253.1790803840.

The spelling of 1968064871 in words is "one billion, nine hundred sixty-eight million, sixty-four thousand, eight hundred seventy-one".