3781608713 has 2 divisors, whose sum is σ = 3781608714. Its totient is φ = 3781608712.

The previous prime is 3781608689. The next prime is 3781608739. The reversal of 3781608713 is 3178061873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3346969609 + 434639104 = 57853^2 + 20848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3781608713 is a prime.

It is not a weakly prime, because it can be changed into another prime (3781608113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890804356 + 1890804357.

It is an arithmetic number, because the mean of its divisors is an integer number (1890804357).

Almost surely, 2^3781608713 is an apocalyptic number.

It is an amenable number.

3781608713 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781608713 is an equidigital number, since it uses as much as digits as its factorization.

3781608713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 3781608713 is about 61494.7860635355. The cubic root of 3781608713 is about 1557.9691842072.

The spelling of 3781608713 in words is "three billion, seven hundred eighty-one million, six hundred eight thousand, seven hundred thirteen".