366886381 has 2 divisors, whose sum is σ = 366886382. Its totient is φ = 366886380.

The previous prime is 366886379. The next prime is 366886417. The reversal of 366886381 is 183688663.

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., 343509156 + 23377225 = 18534^2 + 4835^2 .

It is an emirp because it is prime and its reverse (183688663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 366886381 - 2¹ = 366886379 is a prime.

It is a super-2 number, since 2×366886381² = 269211233126554322, which contains 22 as substring.

Together with 366886379, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366886321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183443190 + 183443191.

It is an arithmetic number, because the mean of its divisors is an integer number (183443191).

Almost surely, 2^366886381 is an apocalyptic number.

It is an amenable number.

366886381 is a deficient number, since it is larger than the sum of its proper divisors (1).

366886381 is an equidigital number, since it uses as much as digits as its factorization.

366886381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 49.

The square root of 366886381 is about 19154.2783993551. The cubic root of 366886381 is about 715.8859905287.

The spelling of 366886381 in words is "three hundred sixty-six million, eight hundred eighty-six thousand, three hundred eighty-one".