16719541 has 2 divisors, whose sum is σ = 16719542. Its totient is φ = 16719540.

The previous prime is 16719533. The next prime is 16719553. The reversal of 16719541 is 14591761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15444900 + 1274641 = 3930^2 + 1129^2 .

It is a cyclic number.

It is not a de Polignac number, because 16719541 - 2³ = 16719533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16719497 and 16719506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16716541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8359770 + 8359771.

It is an arithmetic number, because the mean of its divisors is an integer number (8359771).

Almost surely, 2^16719541 is an apocalyptic number.

It is an amenable number.

16719541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16719541 is an equidigital number, since it uses as much as digits as its factorization.

16719541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 16719541 is about 4088.9535336073. The cubic root of 16719541 is about 255.7063129870.

The spelling of 16719541 in words is "sixteen million, seven hundred nineteen thousand, five hundred forty-one".