16749413 has 2 divisors, whose sum is σ = 16749414. Its totient is φ = 16749412.

The previous prime is 16749401. The next prime is 16749427. The reversal of 16749413 is 31494761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15194404 + 1555009 = 3898^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 16749413 - 2⁶ = 16749349 is a prime.

It is a plaindrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16749433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8374706 + 8374707.

It is an arithmetic number, because the mean of its divisors is an integer number (8374707).

Almost surely, 2^16749413 is an apocalyptic number.

It is an amenable number.

16749413 is a deficient number, since it is larger than the sum of its proper divisors (1).

16749413 is an equidigital number, since it uses as much as digits as its factorization.

16749413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 16749413 is about 4092.6046718441. The cubic root of 16749413 is about 255.8585084411.

The spelling of 16749413 in words is "sixteen million, seven hundred forty-nine thousand, four hundred thirteen".