8149516169 has 4 divisors (see below), whose sum is σ = 8149706820. Its totient is φ = 8149325520.

The previous prime is 8149516159. The next prime is 8149516181. The reversal of 8149516169 is 9616159418.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7625655625 + 523860544 = 87325^2 + 22888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8149516169 is a prime.

It is a super-2 number, since 2×8149516169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8149516139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1739 + ... + 127679.

It is an arithmetic number, because the mean of its divisors is an integer number (2037426705).

Almost surely, 2^8149516169 is an apocalyptic number.

It is an amenable number.

8149516169 is a deficient number, since it is larger than the sum of its proper divisors (190651).

8149516169 is a wasteful number, since it uses less digits than its factorization.

8149516169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190650.

The product of its digits is 466560, while the sum is 50.

The square root of 8149516169 is about 90274.6706944977. The cubic root of 8149516169 is about 2012.3828549742.

The spelling of 8149516169 in words is "eight billion, one hundred forty-nine million, five hundred sixteen thousand, one hundred sixty-nine".