1969081073 has 2 divisors, whose sum is σ = 1969081074. Its totient is φ = 1969081072.

The previous prime is 1969081067. The next prime is 1969081091. The reversal of 1969081073 is 3701809691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1853905249 + 115175824 = 43057^2 + 10732^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969081073 - 2²² = 1964886769 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1969081013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984540536 + 984540537.

It is an arithmetic number, because the mean of its divisors is an integer number (984540537).

Almost surely, 2^1969081073 is an apocalyptic number.

It is an amenable number.

1969081073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969081073 is an equidigital number, since it uses as much as digits as its factorization.

1969081073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1969081073 is about 44374.3289864760. The cubic root of 1969081073 is about 1253.3947345161.

The spelling of 1969081073 in words is "one billion, nine hundred sixty-nine million, eighty-one thousand, seventy-three".