366445813 has 2 divisors, whose sum is σ = 366445814. Its totient is φ = 366445812.

The previous prime is 366445811. The next prime is 366445831. The reversal of 366445813 is 318544663.

Together with next prime (366445831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198302724 + 168143089 = 14082^2 + 12967^2 .

It is an emirp because it is prime and its reverse (318544663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 366445813 - 2¹ = 366445811 is a prime.

Together with 366445811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366445811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183222906 + 183222907.

It is an arithmetic number, because the mean of its divisors is an integer number (183222907).

Almost surely, 2^366445813 is an apocalyptic number.

It is an amenable number.

366445813 is a deficient number, since it is larger than the sum of its proper divisors (1).

366445813 is an equidigital number, since it uses as much as digits as its factorization.

366445813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 366445813 is about 19142.7744331902. The cubic root of 366445813 is about 715.5993234064.

The spelling of 366445813 in words is "three hundred sixty-six million, four hundred forty-five thousand, eight hundred thirteen".