7038181 has 2 divisors, whose sum is σ = 7038182. Its totient is φ = 7038180.

The previous prime is 7038179. The next prime is 7038191. The reversal of 7038181 is 1818307.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6713281 + 324900 = 2591^2 + 570^2 .

It is an emirp because it is prime and its reverse (1818307) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7038181 - 2¹ = 7038179 is a prime.

It is a super-2 number, since 2×7038181² = 99071983577522, which contains 22 as substring.

Together with 7038179, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7038121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3519090 + 3519091.

It is an arithmetic number, because the mean of its divisors is an integer number (3519091).

Almost surely, 2^7038181 is an apocalyptic number.

It is an amenable number.

7038181 is a deficient number, since it is larger than the sum of its proper divisors (1).

7038181 is an equidigital number, since it uses as much as digits as its factorization.

7038181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 7038181 is about 2652.9570294296. The cubic root of 7038181 is about 191.6402860562.

The spelling of 7038181 in words is "seven million, thirty-eight thousand, one hundred eighty-one".