3694116497861 has 2 divisors, whose sum is σ = 3694116497862. Its totient is φ = 3694116497860.

The previous prime is 3694116497821. The next prime is 3694116497909. The reversal of 3694116497861 is 1687946114963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3693676547236 + 439950625 = 1921894^2 + 20975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3694116497861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3694116497821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1847058248930 + 1847058248931.

It is an arithmetic number, because the mean of its divisors is an integer number (1847058248931).

Almost surely, 2^{3694116497861} is an apocalyptic number.

It is an amenable number.

3694116497861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3694116497861 is an equidigital number, since it uses as much as digits as its factorization.

3694116497861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 65.

The spelling of 3694116497861 in words is "three trillion, six hundred ninety-four billion, one hundred sixteen million, four hundred ninety-seven thousand, eight hundred sixty-one".