3613831071181 has 2 divisors, whose sum is σ = 3613831071182. Its totient is φ = 3613831071180.

The previous prime is 3613831071113. The next prime is 3613831071187. The reversal of 3613831071181 is 1811701383163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1808191196100 + 1805639875081 = 1344690^2 + 1343741^2 .

It is a cyclic number.

It is not a de Polignac number, because 3613831071181 - 2¹⁵ = 3613831038413 is a prime.

It is a super-2 number, since 2×3613831071181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3613831071187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806915535590 + 1806915535591.

It is an arithmetic number, because the mean of its divisors is an integer number (1806915535591).

Almost surely, 2^{3613831071181} is an apocalyptic number.

It is an amenable number.

3613831071181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3613831071181 is an equidigital number, since it uses as much as digits as its factorization.

3613831071181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 3613831071181 in words is "three trillion, six hundred thirteen billion, eight hundred thirty-one million, seventy-one thousand, one hundred eighty-one".