1085666164 has 24 divisors (see below), whose sum is σ = 2074968000. Its totient is φ = 492929280.

The previous prime is 1085666161. The next prime is 1085666203. The reversal of 1085666164 is 4616665801.

It is a self number, because there is not a number n which added to its sum of digits gives 1085666164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085666161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27012 + ... + 53860.

It is an arithmetic number, because the mean of its divisors is an integer number (86457000).

Almost surely, 2^1085666164 is an apocalyptic number.

It is an amenable number.

1085666164 is a deficient number, since it is larger than the sum of its proper divisors (989301836).

1085666164 is a wasteful number, since it uses less digits than its factorization.

1085666164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27783 (or 27781 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1085666164 is about 32949.4486145064. The cubic root of 1085666164 is about 1027.7766993170.

The spelling of 1085666164 in words is "one billion, eighty-five million, six hundred sixty-six thousand, one hundred sixty-four".