1168303921 has 2 divisors, whose sum is σ = 1168303922. Its totient is φ = 1168303920.

The previous prime is 1168303919. The next prime is 1168303931. The reversal of 1168303921 is 1293038611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743325696 + 424978225 = 27264^2 + 20615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168303921 - 2¹ = 1168303919 is a prime.

Together with 1168303919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1168303931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584151960 + 584151961.

It is an arithmetic number, because the mean of its divisors is an integer number (584151961).

Almost surely, 2^1168303921 is an apocalyptic number.

It is an amenable number.

1168303921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168303921 is an equidigital number, since it uses as much as digits as its factorization.

1168303921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1168303921 is about 34180.4610998740. The cubic root of 1168303921 is about 1053.2188211940.

The spelling of 1168303921 in words is "one billion, one hundred sixty-eight million, three hundred three thousand, nine hundred twenty-one".