16179749 has 2 divisors, whose sum is σ = 16179750. Its totient is φ = 16179748.

The previous prime is 16179743. The next prime is 16179803. The reversal of 16179749 is 94797161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13823524 + 2356225 = 3718^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 16179749 - 2¹⁶ = 16114213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16179743) 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, 8089874 + 8089875.

It is an arithmetic number, because the mean of its divisors is an integer number (8089875).

Almost surely, 2^16179749 is an apocalyptic number.

It is an amenable number.

16179749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16179749 is an equidigital number, since it uses as much as digits as its factorization.

16179749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 16179749 is about 4022.4058721119. The cubic root of 16179749 is about 252.9243213373.

The spelling of 16179749 in words is "sixteen million, one hundred seventy-nine thousand, seven hundred forty-nine".