1001668793 has 2 divisors, whose sum is σ = 1001668794. Its totient is φ = 1001668792.

The previous prime is 1001668777. The next prime is 1001668799. The reversal of 1001668793 is 3978661001.

1001668793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 937155769 + 64513024 = 30613^2 + 8032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001668793 - 2⁴ = 1001668777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001668793.

It is not a weakly prime, because it can be changed into another prime (1001668799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500834396 + 500834397.

It is an arithmetic number, because the mean of its divisors is an integer number (500834397).

Almost surely, 2^1001668793 is an apocalyptic number.

It is an amenable number.

1001668793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001668793 is an equidigital number, since it uses as much as digits as its factorization.

1001668793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1001668793 is about 31649.1515368106. The cubic root of 1001668793 is about 1000.5559551899. Note that the first 3 decimals are identical.

The spelling of 1001668793 in words is "one billion, one million, six hundred sixty-eight thousand, seven hundred ninety-three".