16320413 has 2 divisors, whose sum is σ = 16320414. Its totient is φ = 16320412.

The previous prime is 16320401. The next prime is 16320431. The reversal of 16320413 is 31402361.

Together with next prime (16320431) 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., 16216729 + 103684 = 4027^2 + 322^2 .

It is a cyclic number.

It is not a de Polignac number, because 16320413 - 2¹² = 16316317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16320113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8160206 + 8160207.

It is an arithmetic number, because the mean of its divisors is an integer number (8160207).

Almost surely, 2^16320413 is an apocalyptic number.

It is an amenable number.

16320413 is a deficient number, since it is larger than the sum of its proper divisors (1).

16320413 is an equidigital number, since it uses as much as digits as its factorization.

16320413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 16320413 is about 4039.8530913883. The cubic root of 16320413 is about 253.6551678767.

Adding to 16320413 its reverse (31402361), we get a palindrome (47722774).

The spelling of 16320413 in words is "sixteen million, three hundred twenty thousand, four hundred thirteen".