16318129 has 2 divisors, whose sum is σ = 16318130. Its totient is φ = 16318128.

The previous prime is 16318111. The next prime is 16318157. The reversal of 16318129 is 92181361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13307904 + 3010225 = 3648^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 16318129 - 2¹¹ = 16316081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16318129.

It is not a weakly prime, because it can be changed into another prime (16318189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8159064 + 8159065.

It is an arithmetic number, because the mean of its divisors is an integer number (8159065).

Almost surely, 2^16318129 is an apocalyptic number.

It is an amenable number.

16318129 is a deficient number, since it is larger than the sum of its proper divisors (1).

16318129 is an equidigital number, since it uses as much as digits as its factorization.

16318129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The square root of 16318129 is about 4039.5703979508. The cubic root of 16318129 is about 253.6433345276.

The spelling of 16318129 in words is "sixteen million, three hundred eighteen thousand, one hundred twenty-nine".