2381968487 has 2 divisors, whose sum is σ = 2381968488. Its totient is φ = 2381968486.

The previous prime is 2381968403. The next prime is 2381968489. The reversal of 2381968487 is 7848691832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2381968487 - 2¹⁴ = 2381952103 is a prime.

It is a super-2 number, since 2×2381968487² = 11347547746122138338, which contains 22 as substring.

Together with 2381968489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381968489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190984243 + 1190984244.

It is an arithmetic number, because the mean of its divisors is an integer number (1190984244).

Almost surely, 2^2381968487 is an apocalyptic number.

2381968487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381968487 is an equidigital number, since it uses as much as digits as its factorization.

2381968487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 56.

The square root of 2381968487 is about 48805.4145254397. The cubic root of 2381968487 is about 1335.5044429946.

The spelling of 2381968487 in words is "two billion, three hundred eighty-one million, nine hundred sixty-eight thousand, four hundred eighty-seven".