16448891149 has 2 divisors, whose sum is σ = 16448891150. Its totient is φ = 16448891148.

The previous prime is 16448891143. The next prime is 16448891177. The reversal of 16448891149 is 94119884461.

16448891149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13347180900 + 3101710249 = 115530^2 + 55693^2 .

It is a cyclic number.

It is not a de Polignac number, because 16448891149 - 2¹¹ = 16448889101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16448891149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16448891143) 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, 8224445574 + 8224445575.

It is an arithmetic number, because the mean of its divisors is an integer number (8224445575).

Almost surely, 2^16448891149 is an apocalyptic number.

It is an amenable number.

16448891149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16448891149 is an equidigital number, since it uses as much as digits as its factorization.

16448891149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 55.

The spelling of 16448891149 in words is "sixteen billion, four hundred forty-eight million, eight hundred ninety-one thousand, one hundred forty-nine".