1000866793393 has 2 divisors, whose sum is σ = 1000866793394. Its totient is φ = 1000866793392.

The previous prime is 1000866793361. The next prime is 1000866793417. The reversal of 1000866793393 is 3933976680001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 899722440369 + 101144353024 = 948537^2 + 318032^2 .

It is an emirp because it is prime and its reverse (3933976680001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000866793393 - 2⁵ = 1000866793361 is a prime.

It is a super-2 number, since 2×1000866793393² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000866793313) 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, 500433396696 + 500433396697.

It is an arithmetic number, because the mean of its divisors is an integer number (500433396697).

Almost surely, 2^{1000866793393} is an apocalyptic number.

It is an amenable number.

1000866793393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000866793393 is an equidigital number, since it uses as much as digits as its factorization.

1000866793393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 1000866793393 in words is "one trillion, eight hundred sixty-six million, seven hundred ninety-three thousand, three hundred ninety-three".