1993144320067 has 2 divisors, whose sum is σ = 1993144320068. Its totient is φ = 1993144320066.

The previous prime is 1993144319923. The next prime is 1993144320107. The reversal of 1993144320067 is 7600234413991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1993144320067 - 2²⁷ = 1993010102339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1993144320067.

It is not a weakly prime, because it can be changed into another prime (1993144326067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996572160033 + 996572160034.

It is an arithmetic number, because the mean of its divisors is an integer number (996572160034).

Almost surely, 2^{1993144320067} is an apocalyptic number.

1993144320067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993144320067 is an equidigital number, since it uses as much as digits as its factorization.

1993144320067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 1993144320067 in words is "one trillion, nine hundred ninety-three billion, one hundred forty-four million, three hundred twenty thousand, sixty-seven".