8168977860 has 96 divisors (see below), whose sum is σ = 23267865600. Its totient is φ = 2141073792.

The previous prime is 8168977813. The next prime is 8168977879. The reversal of 8168977860 is 687798618.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 8168977794 and 8168977803.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 986899 + ... + 995141.

It is an arithmetic number, because the mean of its divisors is an integer number (242373600).

Almost surely, 2^8168977860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8168977860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11633932800).

8168977860 is an abundant number, since it is smaller than the sum of its proper divisors (15098887740).

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

8168977860 is a wasteful number, since it uses less digits than its factorization.

8168977860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537 (or 8535 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 60.

The square root of 8168977860 is about 90382.3979544690. The cubic root of 8168977860 is about 2013.9834914580.

The spelling of 8168977860 in words is "eight billion, one hundred sixty-eight million, nine hundred seventy-seven thousand, eight hundred sixty".