230891166 has 96 divisors (see below), whose sum is σ = 571304448. Its totient is φ = 66769920.

The previous prime is 230891159. The next prime is 230891197. The reversal of 230891166 is 661198032.

It is a self number, because there is not a number n which added to its sum of digits gives 230891166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 399870 + ... + 400446.

It is an arithmetic number, because the mean of its divisors is an integer number (5951088).

Almost surely, 2^230891166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230891166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285652224).

230891166 is an abundant number, since it is smaller than the sum of its proper divisors (340413282).

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

230891166 is a wasteful number, since it uses less digits than its factorization.

230891166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 230891166 is about 15195.1033560157. The cubic root of 230891166 is about 613.4828676696.

The spelling of 230891166 in words is "two hundred thirty million, eight hundred ninety-one thousand, one hundred sixty-six".