8199281616 has 80 divisors (see below), whose sum is σ = 21458055168. Its totient is φ = 2697635200.

The previous prime is 8199281609. The next prime is 8199281677. The reversal of 8199281616 is 6161829918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197595 + ... + 1204421.

Almost surely, 2^8199281616 is an apocalyptic number.

It is an amenable number.

8199281616 is an abundant number, since it is smaller than the sum of its proper divisors (13258773552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8199281616 is a wasteful number, since it uses less digits than its factorization.

8199281616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160 (or 7154 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 8199281616 is about 90549.8846824224. The cubic root of 8199281616 is about 2016.4707855856.

The spelling of 8199281616 in words is "eight billion, one hundred ninety-nine million, two hundred eighty-one thousand, six hundred sixteen".