2111743993 has 2 divisors, whose sum is σ = 2111743994. Its totient is φ = 2111743992.

The previous prime is 2111743987. The next prime is 2111744027. The reversal of 2111743993 is 3993471112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2101580649 + 10163344 = 45843^2 + 3188^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111743993 - 2⁹ = 2111743481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111743903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055871996 + 1055871997.

It is an arithmetic number, because the mean of its divisors is an integer number (1055871997).

Almost surely, 2^2111743993 is an apocalyptic number.

It is an amenable number.

2111743993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111743993 is an equidigital number, since it uses as much as digits as its factorization.

2111743993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 2111743993 is about 45953.7157692389. The cubic root of 2111743993 is about 1282.9618895474.

The spelling of 2111743993 in words is "two billion, one hundred eleven million, seven hundred forty-three thousand, nine hundred ninety-three".