1768496789 has 2 divisors, whose sum is σ = 1768496790. Its totient is φ = 1768496788.

The previous prime is 1768496771. The next prime is 1768496803. The reversal of 1768496789 is 9876948671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1346523025 + 421973764 = 36695^2 + 20542^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768496789 - 2²⁸ = 1500061333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1768496089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884248394 + 884248395.

It is an arithmetic number, because the mean of its divisors is an integer number (884248395).

Almost surely, 2^1768496789 is an apocalyptic number.

It is an amenable number.

1768496789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1768496789 is an equidigital number, since it uses as much as digits as its factorization.

1768496789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36578304, while the sum is 65.

The square root of 1768496789 is about 42053.4991290856. The cubic root of 1768496789 is about 1209.3019649414.

The spelling of 1768496789 in words is "one billion, seven hundred sixty-eight million, four hundred ninety-six thousand, seven hundred eighty-nine".