845144166 has 16 divisors (see below), whose sum is σ = 1691080704. Its totient is φ = 281582664.

The previous prime is 845144161. The next prime is 845144173. The reversal of 845144166 is 661441548.

It is a super-2 number, since 2×845144166² = 1428537322647671112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845144161) 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, 18670 + ... + 45153.

It is an arithmetic number, because the mean of its divisors is an integer number (105692544).

Almost surely, 2^845144166 is an apocalyptic number.

845144166 is an abundant number, since it is smaller than the sum of its proper divisors (845936538).

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

845144166 is a wasteful number, since it uses less digits than its factorization.

845144166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66035.

The product of its digits is 92160, while the sum is 39.

The square root of 845144166 is about 29071.3633323241. The cubic root of 845144166 is about 945.4609570532.

The spelling of 845144166 in words is "eight hundred forty-five million, one hundred forty-four thousand, one hundred sixty-six".