16845749 has 2 divisors, whose sum is σ = 16845750. Its totient is φ = 16845748.

The previous prime is 16845737. The next prime is 16845757. The reversal of 16845749 is 94754861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16728100 + 117649 = 4090^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 16845749 - 2⁴ = 16845733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16845769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8422874 + 8422875.

It is an arithmetic number, because the mean of its divisors is an integer number (8422875).

Almost surely, 2^16845749 is an apocalyptic number.

It is an amenable number.

16845749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16845749 is an equidigital number, since it uses as much as digits as its factorization.

16845749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 16845749 is about 4104.3573187528. The cubic root of 16845749 is about 256.3481033057.

The spelling of 16845749 in words is "sixteen million, eight hundred forty-five thousand, seven hundred forty-nine".