1968504049 has 2 divisors, whose sum is σ = 1968504050. Its totient is φ = 1968504048.

The previous prime is 1968504029. The next prime is 1968504073. The reversal of 1968504049 is 9404058691.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1951430625 + 17073424 = 44175^2 + 4132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968504049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1968504029) 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, 984252024 + 984252025.

It is an arithmetic number, because the mean of its divisors is an integer number (984252025).

Almost surely, 2^1968504049 is an apocalyptic number.

It is an amenable number.

1968504049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968504049 is an equidigital number, since it uses as much as digits as its factorization.

1968504049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 1968504049 is about 44367.8267328928. The cubic root of 1968504049 is about 1253.2722900061.

The spelling of 1968504049 in words is "one billion, nine hundred sixty-eight million, five hundred four thousand, forty-nine".