2381968489 has 2 divisors, whose sum is σ = 2381968490. Its totient is φ = 2381968488.

The previous prime is 2381968487. The next prime is 2381968493. The reversal of 2381968489 is 9848691832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2356131600 + 25836889 = 48540^2 + 5083^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381968489 - 2¹ = 2381968487 is a prime.

Together with 2381968487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2381968487) 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, 1190984244 + 1190984245.

It is an arithmetic number, because the mean of its divisors is an integer number (1190984245).

Almost surely, 2^2381968489 is an apocalyptic number.

It is an amenable number.

2381968489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381968489 is an equidigital number, since it uses as much as digits as its factorization.

2381968489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5971968, while the sum is 58.

The square root of 2381968489 is about 48805.4145459292. The cubic root of 2381968489 is about 1335.5044433684.

The spelling of 2381968489 in words is "two billion, three hundred eighty-one million, nine hundred sixty-eight thousand, four hundred eighty-nine".