8161986752 has 28 divisors (see below), whose sum is σ = 16401470880. Its totient is φ = 4029332736.

The previous prime is 8161986733. The next prime is 8161986761. The reversal of 8161986752 is 2576891618.

It is a junction number, because it is equal to n+sod(n) for n = 8161986694 and 8161986703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802103 + ... + 812214.

Almost surely, 2^8161986752 is an apocalyptic number.

It is an amenable number.

8161986752 is an abundant number, since it is smaller than the sum of its proper divisors (8239484128).

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

8161986752 is a wasteful number, since it uses less digits than its factorization.

8161986752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614408 (or 1614398 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 8161986752 is about 90343.7145129643. The cubic root of 8161986752 is about 2013.4087971753.

The spelling of 8161986752 in words is "eight billion, one hundred sixty-one million, nine hundred eighty-six thousand, seven hundred fifty-two".