1768684769 has 2 divisors, whose sum is σ = 1768684770. Its totient is φ = 1768684768.

The previous prime is 1768684739. The next prime is 1768684793. The reversal of 1768684769 is 9674868671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226400400 + 542284369 = 35020^2 + 23287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768684769 - 2⁸ = 1768684513 is a prime.

It is a super-2 number, since 2×1768684769² = 6256491624185166722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1768684739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884342384 + 884342385.

It is an arithmetic number, because the mean of its divisors is an integer number (884342385).

Almost surely, 2^1768684769 is an apocalyptic number.

It is an amenable number.

1768684769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1768684769 is an equidigital number, since it uses as much as digits as its factorization.

1768684769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 62.

The square root of 1768684769 is about 42055.7340799088. The cubic root of 1768684769 is about 1209.3448104681.

The spelling of 1768684769 in words is "one billion, seven hundred sixty-eight million, six hundred eighty-four thousand, seven hundred sixty-nine".