16940543 has 2 divisors, whose sum is σ = 16940544. Its totient is φ = 16940542.

The previous prime is 16940531. The next prime is 16940563. The reversal of 16940543 is 34504961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16940543 - 2⁶ = 16940479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16940563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8470271 + 8470272.

It is an arithmetic number, because the mean of its divisors is an integer number (8470272).

Almost surely, 2^16940543 is an apocalyptic number.

16940543 is a deficient number, since it is larger than the sum of its proper divisors (1).

16940543 is an equidigital number, since it uses as much as digits as its factorization.

16940543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 16940543 is about 4115.8890898565. The cubic root of 16940543 is about 256.8280428530.

The spelling of 16940543 in words is "sixteen million, nine hundred forty thousand, five hundred forty-three".