16919229641 has 2 divisors, whose sum is σ = 16919229642. Its totient is φ = 16919229640.

The previous prime is 16919229589. The next prime is 16919229647. The reversal of 16919229641 is 14692291961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14280250000 + 2638979641 = 119500^2 + 51371^2 .

It is an emirp because it is prime and its reverse (14692291961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16919229641 - 2¹⁰ = 16919228617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16919229641.

It is not a weakly prime, because it can be changed into another prime (16919229647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459614820 + 8459614821.

It is an arithmetic number, because the mean of its divisors is an integer number (8459614821).

Almost surely, 2^16919229641 is an apocalyptic number.

It is an amenable number.

16919229641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16919229641 is an equidigital number, since it uses as much as digits as its factorization.

16919229641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 50.

The spelling of 16919229641 in words is "sixteen billion, nine hundred nineteen million, two hundred twenty-nine thousand, six hundred forty-one".