3813774071857 has 2 divisors, whose sum is σ = 3813774071858. Its totient is φ = 3813774071856.

The previous prime is 3813774071797. The next prime is 3813774071893. The reversal of 3813774071857 is 7581704773183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2495006634481 + 1318767437376 = 1579559^2 + 1148376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3813774071857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3813774071795 and 3813774071804.

It is not a weakly prime, because it can be changed into another prime (3813774071957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906887035928 + 1906887035929.

It is an arithmetic number, because the mean of its divisors is an integer number (1906887035929).

Almost surely, 2^{3813774071857} is an apocalyptic number.

It is an amenable number.

3813774071857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3813774071857 is an equidigital number, since it uses as much as digits as its factorization.

3813774071857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 3813774071857 in words is "three trillion, eight hundred thirteen billion, seven hundred seventy-four million, seventy-one thousand, eight hundred fifty-seven".