16179548849 has 2 divisors, whose sum is σ = 16179548850. Its totient is φ = 16179548848.

The previous prime is 16179548831. The next prime is 16179548909. The reversal of 16179548849 is 94884597161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15642004624 + 537544225 = 125068^2 + 23185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16179548849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16179548791 and 16179548800.

It is not a weakly prime, because it can be changed into another prime (16179541849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8089774424 + 8089774425.

It is an arithmetic number, because the mean of its divisors is an integer number (8089774425).

Almost surely, 2^16179548849 is an apocalyptic number.

It is an amenable number.

16179548849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16179548849 is an equidigital number, since it uses as much as digits as its factorization.

16179548849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 62.

The spelling of 16179548849 in words is "sixteen billion, one hundred seventy-nine million, five hundred forty-eight thousand, eight hundred forty-nine".