16363813 has 2 divisors, whose sum is σ = 16363814. Its totient is φ = 16363812.

The previous prime is 16363771. The next prime is 16363817. The reversal of 16363813 is 31836361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14152644 + 2211169 = 3762^2 + 1487^2 .

It is an emirp because it is prime and its reverse (31836361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16363813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16363817) 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, 8181906 + 8181907.

It is an arithmetic number, because the mean of its divisors is an integer number (8181907).

Almost surely, 2^16363813 is an apocalyptic number.

It is an amenable number.

16363813 is a deficient number, since it is larger than the sum of its proper divisors (1).

16363813 is an equidigital number, since it uses as much as digits as its factorization.

16363813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 16363813 is about 4045.2210075594. The cubic root of 16363813 is about 253.8798127320.

The spelling of 16363813 in words is "sixteen million, three hundred sixty-three thousand, eight hundred thirteen".