16179548909 has 2 divisors, whose sum is σ = 16179548910. Its totient is φ = 16179548908.

The previous prime is 16179548849. The next prime is 16179548951. The reversal of 16179548909 is 90984597161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10531274884 + 5648274025 = 102622^2 + 75155^2 .

It is an emirp because it is prime and its reverse (90984597161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16179548909 - 2⁸ = 16179548653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16179548989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8089774454 + 8089774455.

It is an arithmetic number, because the mean of its divisors is an integer number (8089774455).

Almost surely, 2^16179548909 is an apocalyptic number.

It is an amenable number.

16179548909 is a deficient number, since it is larger than the sum of its proper divisors (1).

16179548909 is an equidigital number, since it uses as much as digits as its factorization.

16179548909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 16179548909 in words is "sixteen billion, one hundred seventy-nine million, five hundred forty-eight thousand, nine hundred nine".