3840381739 has 2 divisors, whose sum is σ = 3840381740. Its totient is φ = 3840381738.

The previous prime is 3840381689. The next prime is 3840381751. The reversal of 3840381739 is 9371830483.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9371830483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3840381739 - 2²¹ = 3838284587 is a prime.

It is not a weakly prime, because it can be changed into another prime (3840381439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1920190869 + 1920190870.

It is an arithmetic number, because the mean of its divisors is an integer number (1920190870).

Almost surely, 2^3840381739 is an apocalyptic number.

3840381739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3840381739 is an equidigital number, since it uses as much as digits as its factorization.

3840381739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 3840381739 is about 61970.8136060840. The cubic root of 3840381739 is about 1565.9989456390.

The spelling of 3840381739 in words is "three billion, eight hundred forty million, three hundred eighty-one thousand, seven hundred thirty-nine".