2381968387 has 2 divisors, whose sum is σ = 2381968388. Its totient is φ = 2381968386.

The previous prime is 2381968367. The next prime is 2381968397. The reversal of 2381968387 is 7838691832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2381968387 is a prime.

It is not a weakly prime, because it can be changed into another prime (2381968367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190984193 + 1190984194.

It is an arithmetic number, because the mean of its divisors is an integer number (1190984194).

Almost surely, 2^2381968387 is an apocalyptic number.

2381968387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381968387 is an equidigital number, since it uses as much as digits as its factorization.

2381968387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 55.

The square root of 2381968387 is about 48805.4135009632. The cubic root of 2381968387 is about 1335.5044243056.

The spelling of 2381968387 in words is "two billion, three hundred eighty-one million, nine hundred sixty-eight thousand, three hundred eighty-seven".