8615891166 has 32 divisors (see below), whose sum is σ = 17639381760. Its totient is φ = 2804082624.

The previous prime is 8615891117. The next prime is 8615891189. The reversal of 8615891166 is 6611985168.

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, 905751 + ... + 915213.

It is an arithmetic number, because the mean of its divisors is an integer number (551230680).

Almost surely, 2^8615891166 is an apocalyptic number.

8615891166 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

8615891166 is an abundant number, since it is smaller than the sum of its proper divisors (9023490594).

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

8615891166 is a wasteful number, since it uses less digits than its factorization.

8615891166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13040.

The product of its digits is 622080, while the sum is 51.

The square root of 8615891166 is about 92821.8248366191. The cubic root of 8615891166 is about 2050.0607688510.

The spelling of 8615891166 in words is "eight billion, six hundred fifteen million, eight hundred ninety-one thousand, one hundred sixty-six".