3813756831449 has 2 divisors, whose sum is σ = 3813756831450. Its totient is φ = 3813756831448.

The previous prime is 3813756831419. The next prime is 3813756831457. The reversal of 3813756831449 is 9441386573183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3008465967049 + 805290864400 = 1734493^2 + 897380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3813756831449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3813756831391 and 3813756831400.

It is not a weakly prime, because it can be changed into another prime (3813756831419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906878415724 + 1906878415725.

It is an arithmetic number, because the mean of its divisors is an integer number (1906878415725).

Almost surely, 2^{3813756831449} is an apocalyptic number.

It is an amenable number.

3813756831449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3813756831449 is an equidigital number, since it uses as much as digits as its factorization.

3813756831449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 62.

The spelling of 3813756831449 in words is "three trillion, eight hundred thirteen billion, seven hundred fifty-six million, eight hundred thirty-one thousand, four hundred forty-nine".