16057649 has 2 divisors, whose sum is σ = 16057650. Its totient is φ = 16057648.

The previous prime is 16057631. The next prime is 16057651. The reversal of 16057649 is 94675061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 1600 = 4007^2 + 40^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16057649 is a prime.

It is a Sophie Germain prime.

Together with 16057651, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16057549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8028824 + 8028825.

It is an arithmetic number, because the mean of its divisors is an integer number (8028825).

Almost surely, 2^16057649 is an apocalyptic number.

It is an amenable number.

16057649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16057649 is an equidigital number, since it uses as much as digits as its factorization.

16057649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 16057649 is about 4007.1996456378. The cubic root of 16057649 is about 252.2864855158.

The spelling of 16057649 in words is "sixteen million, fifty-seven thousand, six hundred forty-nine".