16005749 has 2 divisors, whose sum is σ = 16005750. Its totient is φ = 16005748.

The previous prime is 16005739. The next prime is 16005751. The reversal of 16005749 is 94750061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10125124 + 5880625 = 3182^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 16005749 - 2¹⁶ = 15940213 is a prime.

Together with 16005751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16005739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8002874 + 8002875.

It is an arithmetic number, because the mean of its divisors is an integer number (8002875).

Almost surely, 2^16005749 is an apocalyptic number.

It is an amenable number.

16005749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16005749 is an equidigital number, since it uses as much as digits as its factorization.

16005749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 16005749 is about 4000.7185604589. The cubic root of 16005749 is about 252.0143867238.

The spelling of 16005749 in words is "sixteen million, five thousand, seven hundred forty-nine".