1850166 has 48 divisors (see below), whose sum is σ = 4324320. Its totient is φ = 570240.

The previous prime is 1850159. The next prime is 1850179. The reversal of 1850166 is 6610581.

It is a super-2 number, since 2×1850166² = 6846228455112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16920 + ... + 17028.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2^1850166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1850166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162160).

1850166 is an abundant number, since it is smaller than the sum of its proper divisors (2474154).

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

1850166 is a wasteful number, since it uses less digits than its factorization.

1850166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1850166 is about 1360.2080723183. The cubic root of 1850166 is about 122.7637742530.

It can be divided in two parts, 1850 and 166, that added together give a triangular number (2016 = T₆₃).

The spelling of 1850166 in words is "one million, eight hundred fifty thousand, one hundred sixty-six".