16343491 has 2 divisors, whose sum is σ = 16343492. Its totient is φ = 16343490.

The previous prime is 16343449. The next prime is 16343519. The reversal of 16343491 is 19434361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16343491 - 2¹³ = 16335299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16343191) 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, 8171745 + 8171746.

It is an arithmetic number, because the mean of its divisors is an integer number (8171746).

Almost surely, 2^16343491 is an apocalyptic number.

16343491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16343491 is an equidigital number, since it uses as much as digits as its factorization.

16343491 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 16343491 is about 4042.7083743451. The cubic root of 16343491 is about 253.7746725506.

The spelling of 16343491 in words is "sixteen million, three hundred forty-three thousand, four hundred ninety-one".