1810166 has 4 divisors (see below), whose sum is σ = 2715252. Its totient is φ = 905082.

The previous prime is 1810153. The next prime is 1810199. The reversal of 1810166 is 6610181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452540 + ... + 452543.

It is an arithmetic number, because the mean of its divisors is an integer number (678813).

2^1810166 is an apocalyptic number.

1810166 is a deficient number, since it is larger than the sum of its proper divisors (905086).

1810166 is an equidigital number, since it uses as much as digits as its factorization.

1810166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905085.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1810166 is about 1345.4240967071. The cubic root of 1810166 is about 121.8726163023.

The spelling of 1810166 in words is "one million, eight hundred ten thousand, one hundred sixty-six".