16244491 has 2 divisors, whose sum is σ = 16244492. Its totient is φ = 16244490.

The previous prime is 16244489. The next prime is 16244507. The reversal of 16244491 is 19444261.

It is a weak prime.

It is an emirp because it is prime and its reverse (19444261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16244491 - 2¹ = 16244489 is a prime.

Together with 16244489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16244441) 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, 8122245 + 8122246.

It is an arithmetic number, because the mean of its divisors is an integer number (8122246).

Almost surely, 2^16244491 is an apocalyptic number.

16244491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16244491 is an equidigital number, since it uses as much as digits as its factorization.

16244491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 16244491 is about 4030.4455088737. The cubic root of 16244491 is about 253.2612246678.

The spelling of 16244491 in words is "sixteen million, two hundred forty-four thousand, four hundred ninety-one".