16249042169 has 4 divisors (see below), whose sum is σ = 16250172660. Its totient is φ = 16247911680.

The previous prime is 16249042163. The next prime is 16249042207. The reversal of 16249042169 is 96124094261.

16249042169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96124094261 = 13 ⋅7394161097.

It can be written as a sum of positive squares in 2 ways, for example, as 6019742569 + 10229299600 = 77587^2 + 101140^2 .

It is a cyclic number.

It is not a de Polignac number, because 16249042169 - 2²⁴ = 16232264953 is a prime.

It is a super-2 number, since 2×16249042169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16249042163) 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 in 3 ways as a sum of consecutive naturals, for example, 543404 + ... + 572525.

It is an arithmetic number, because the mean of its divisors is an integer number (4062543165).

Almost surely, 2^16249042169 is an apocalyptic number.

It is an amenable number.

16249042169 is a deficient number, since it is larger than the sum of its proper divisors (1130491).

16249042169 is a wasteful number, since it uses less digits than its factorization.

16249042169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130490.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 16249042169 in words is "sixteen billion, two hundred forty-nine million, forty-two thousand, one hundred sixty-nine".