16748749 has 2 divisors, whose sum is σ = 16748750. Its totient is φ = 16748748.

The previous prime is 16748737. The next prime is 16748803. The reversal of 16748749 is 94784761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10843849 + 5904900 = 3293^2 + 2430^2 .

It is a cyclic number.

It is not a de Polignac number, because 16748749 - 2⁵ = 16748717 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16748699 and 16748708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16748449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8374374 + 8374375.

It is an arithmetic number, because the mean of its divisors is an integer number (8374375).

Almost surely, 2^16748749 is an apocalyptic number.

It is an amenable number.

16748749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16748749 is an equidigital number, since it uses as much as digits as its factorization.

16748749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 16748749 is about 4092.5235491076. The cubic root of 16748749 is about 255.8551273814.

The spelling of 16748749 in words is "sixteen million, seven hundred forty-eight thousand, seven hundred forty-nine".