2001993793 has 2 divisors, whose sum is σ = 2001993794. Its totient is φ = 2001993792.

The previous prime is 2001993779. The next prime is 2001993803. The reversal of 2001993793 is 3973991002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176695809 + 825297984 = 34303^2 + 28728^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001993793 - 2²¹ = 1999896641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001991793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000996896 + 1000996897.

It is an arithmetic number, because the mean of its divisors is an integer number (1000996897).

Almost surely, 2^2001993793 is an apocalyptic number.

It is an amenable number.

2001993793 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001993793 is an equidigital number, since it uses as much as digits as its factorization.

2001993793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 2001993793 is about 44743.6452806429. The cubic root of 2001993793 is about 1260.3395811432.

The spelling of 2001993793 in words is "two billion, one million, nine hundred ninety-three thousand, seven hundred ninety-three".