3806481700181 has 2 divisors, whose sum is σ = 3806481700182. Its totient is φ = 3806481700180.

The previous prime is 3806481700171. The next prime is 3806481700237. The reversal of 3806481700181 is 1810071846083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3275719911025 + 530761789156 = 1809895^2 + 728534^2 .

It is a cyclic number.

It is not a de Polignac number, because 3806481700181 - 2³⁰ = 3805407958357 is a prime.

It is a super-2 number, since 2×3806481700181² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3806481700171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903240850090 + 1903240850091.

It is an arithmetic number, because the mean of its divisors is an integer number (1903240850091).

Almost surely, 2^{3806481700181} is an apocalyptic number.

It is an amenable number.

3806481700181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3806481700181 is an equidigital number, since it uses as much as digits as its factorization.

3806481700181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 3806481700181 in words is "three trillion, eight hundred six billion, four hundred eighty-one million, seven hundred thousand, one hundred eighty-one".