1768943749 has 2 divisors, whose sum is σ = 1768943750. Its totient is φ = 1768943748.

The previous prime is 1768943717. The next prime is 1768943753. The reversal of 1768943749 is 9473498671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1242562500 + 526381249 = 35250^2 + 22943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768943749 - 2⁵ = 1768943717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1768943693 and 1768943702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1768943779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884471874 + 884471875.

It is an arithmetic number, because the mean of its divisors is an integer number (884471875).

Almost surely, 2^1768943749 is an apocalyptic number.

It is an amenable number.

1768943749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1768943749 is an equidigital number, since it uses as much as digits as its factorization.

1768943749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 58.

The square root of 1768943749 is about 42058.8129765927. The cubic root of 1768943749 is about 1209.4038337678.

The spelling of 1768943749 in words is "one billion, seven hundred sixty-eight million, nine hundred forty-three thousand, seven hundred forty-nine".