1916665082273 has 2 divisors, whose sum is σ = 1916665082274. Its totient is φ = 1916665082272.

The previous prime is 1916665082261. The next prime is 1916665082351. The reversal of 1916665082273 is 3722805666191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1520404904209 + 396260178064 = 1233047^2 + 629492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1916665082273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1916665082243) 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, 958332541136 + 958332541137.

It is an arithmetic number, because the mean of its divisors is an integer number (958332541137).

Almost surely, 2^{1916665082273} is an apocalyptic number.

It is an amenable number.

1916665082273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916665082273 is an equidigital number, since it uses as much as digits as its factorization.

1916665082273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 1916665082273 in words is "one trillion, nine hundred sixteen billion, six hundred sixty-five million, eighty-two thousand, two hundred seventy-three".