1768923397 has 2 divisors, whose sum is σ = 1768923398. Its totient is φ = 1768923396.

The previous prime is 1768923361. The next prime is 1768923407. The reversal of 1768923397 is 7933298671.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1076233636 + 692689761 = 32806^2 + 26319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1768923397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1768923197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884461698 + 884461699.

It is an arithmetic number, because the mean of its divisors is an integer number (884461699).

Almost surely, 2^1768923397 is an apocalyptic number.

It is an amenable number.

1768923397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1768923397 is an equidigital number, since it uses as much as digits as its factorization.

1768923397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 55.

The square root of 1768923397 is about 42058.5710289829. The cubic root of 1768923397 is about 1209.3991956175.

The spelling of 1768923397 in words is "one billion, seven hundred sixty-eight million, nine hundred twenty-three thousand, three hundred ninety-seven".