3782318791 has 2 divisors, whose sum is σ = 3782318792. Its totient is φ = 3782318790.

The previous prime is 3782318783. The next prime is 3782318873. The reversal of 3782318791 is 1978132873.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3782318791 - 2³ = 3782318783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3782318731) 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, 1891159395 + 1891159396.

It is an arithmetic number, because the mean of its divisors is an integer number (1891159396).

Almost surely, 2^3782318791 is an apocalyptic number.

3782318791 is a deficient number, since it is larger than the sum of its proper divisors (1).

3782318791 is an equidigital number, since it uses as much as digits as its factorization.

3782318791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The square root of 3782318791 is about 61500.5592738798. The cubic root of 3782318791 is about 1558.0666921278.

The spelling of 3782318791 in words is "three billion, seven hundred eighty-two million, three hundred eighteen thousand, seven hundred ninety-one".