7281169916 has 24 divisors (see below), whose sum is σ = 12972830640. Its totient is φ = 3575238912.

The previous prime is 7281169897. The next prime is 7281169939. The reversal of 7281169916 is 6199611827.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24626 + ... + 123161.

It is an arithmetic number, because the mean of its divisors is an integer number (540534610).

Almost surely, 2^7281169916 is an apocalyptic number.

It is an amenable number.

7281169916 is a deficient number, since it is larger than the sum of its proper divisors (5691660724).

7281169916 is a wasteful number, since it uses less digits than its factorization.

7281169916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148013 (or 148011 counting only the distinct ones).

The product of its digits is 326592, while the sum is 50.

The square root of 7281169916 is about 85329.7715688962. The cubic root of 7281169916 is about 1938.2080306832.

The spelling of 7281169916 in words is "seven billion, two hundred eighty-one million, one hundred sixty-nine thousand, nine hundred sixteen".