38086181 has 6 divisors (see below), whose sum is σ = 44304390. Its totient is φ = 32645256.

The previous prime is 38086163. The next prime is 38086219. The reversal of 38086181 is 18168083.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36409156 + 1677025 = 6034^2 + 1295^2 .

It is not a de Polignac number, because 38086181 - 2¹⁴ = 38069797 is a prime.

It is a super-2 number, since 2×38086181² = 2901114366329522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38086381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388586 + ... + 388683.

It is an arithmetic number, because the mean of its divisors is an integer number (7384065).

Almost surely, 2^38086181 is an apocalyptic number.

It is an amenable number.

38086181 is a deficient number, since it is larger than the sum of its proper divisors (6218209).

38086181 is an equidigital number, since it uses as much as digits as its factorization.

38086181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777283 (or 777276 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 38086181 is about 6171.4002462974. The cubic root of 38086181 is about 336.4515052794.

The spelling of 38086181 in words is "thirty-eight million, eighty-six thousand, one hundred eighty-one".