38361181 has 2 divisors, whose sum is σ = 38361182. Its totient is φ = 38361180.

The previous prime is 38361179. The next prime is 38361187. The reversal of 38361181 is 18116383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33988900 + 4372281 = 5830^2 + 2091^2 .

It is a cyclic number.

It is not a de Polignac number, because 38361181 - 2¹ = 38361179 is a prime.

It is a super-2 number, since 2×38361181² = 2943160415429522, which contains 22 as substring.

Together with 38361179, it forms a pair of twin primes.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38361187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19180590 + 19180591.

It is an arithmetic number, because the mean of its divisors is an integer number (19180591).

Almost surely, 2^38361181 is an apocalyptic number.

It is an amenable number.

38361181 is a deficient number, since it is larger than the sum of its proper divisors (1).

38361181 is an equidigital number, since it uses as much as digits as its factorization.

38361181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 38361181 is about 6193.6403673446. The cubic root of 38361181 is about 337.2593430247.

The spelling of 38361181 in words is "thirty-eight million, three hundred sixty-one thousand, one hundred eighty-one".