338113181 has 12 divisors (see below), whose sum is σ = 393938172. Its totient is φ = 289352448.

The previous prime is 338113177. The next prime is 338113201. The reversal of 338113181 is 181311833.

It can be written as a sum of positive squares in 2 ways, for example, as 72097081 + 266016100 = 8491^2 + 16310^2 .

It is not a de Polignac number, because 338113181 - 2² = 338113177 is a prime.

It is a super-2 number, since 2×338113181² = 228641046331877522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338113081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27851 + ... + 38103.

It is an arithmetic number, because the mean of its divisors is an integer number (32828181).

Almost surely, 2^338113181 is an apocalyptic number.

It is an amenable number.

338113181 is a deficient number, since it is larger than the sum of its proper divisors (55824991).

338113181 is a wasteful number, since it uses less digits than its factorization.

338113181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10940 (or 10933 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 338113181 is about 18387.8541706203. The cubic root of 338113181 is about 696.6597194376.

The spelling of 338113181 in words is "three hundred thirty-eight million, one hundred thirteen thousand, one hundred eighty-one".