3791391641 has 2 divisors, whose sum is σ = 3791391642. Its totient is φ = 3791391640.

The previous prime is 3791391559. The next prime is 3791391677. The reversal of 3791391641 is 1461931973.

3791391641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3767381641 + 24010000 = 61379^2 + 4900^2 .

It is an emirp because it is prime and its reverse (1461931973) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3791391641 - 2³⁰ = 2717649817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3791391592 and 3791391601.

It is not a weakly prime, because it can be changed into another prime (3791391041) 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, 1895695820 + 1895695821.

It is an arithmetic number, because the mean of its divisors is an integer number (1895695821).

Almost surely, 2^3791391641 is an apocalyptic number.

It is an amenable number.

3791391641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3791391641 is an equidigital number, since it uses as much as digits as its factorization.

3791391641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 3791391641 is about 61574.2774297839. The cubic root of 3791391641 is about 1559.3115032430.

The spelling of 3791391641 in words is "three billion, seven hundred ninety-one million, three hundred ninety-one thousand, six hundred forty-one".