2106943493 has 2 divisors, whose sum is σ = 2106943494. Its totient is φ = 2106943492.

The previous prime is 2106943469. The next prime is 2106943507. The reversal of 2106943493 is 3943496012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1666027489 + 440916004 = 40817^2 + 20998^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106943493 - 2¹⁰ = 2106942469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2106943493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106943453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053471746 + 1053471747.

It is an arithmetic number, because the mean of its divisors is an integer number (1053471747).

Almost surely, 2^2106943493 is an apocalyptic number.

It is an amenable number.

2106943493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106943493 is an equidigital number, since it uses as much as digits as its factorization.

2106943493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 2106943493 is about 45901.4541490790. The cubic root of 2106943493 is about 1281.9889920549.

The spelling of 2106943493 in words is "two billion, one hundred six million, nine hundred forty-three thousand, four hundred ninety-three".