4138136181 has 24 divisors (see below), whose sum is σ = 6283630080. Its totient is φ = 2720954592.

The previous prime is 4138136113. The next prime is 4138136201. The reversal of 4138136181 is 1816318314.

4138136181 is a `hidden beast` number, since 4 + 1 + 38 + 1 + 3 + 618 + 1 = 666.

It is not a de Polignac number, because 4138136181 - 2⁷ = 4138136053 is a prime.

It is a super-2 number, since 2×4138136181² = 34248342105002529522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138136281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98901 + ... + 134378.

It is an arithmetic number, because the mean of its divisors is an integer number (261817920).

Almost surely, 2^4138136181 is an apocalyptic number.

It is an amenable number.

4138136181 is a deficient number, since it is larger than the sum of its proper divisors (2145493899).

4138136181 is an equidigital number, since it uses as much as digits as its factorization.

4138136181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233367 (or 233355 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 4138136181 is about 64328.3466366111. The cubic root of 4138136181 is about 1605.4677752622.

The spelling of 4138136181 in words is "four billion, one hundred thirty-eight million, one hundred thirty-six thousand, one hundred eighty-one".