1905166 has 4 divisors (see below), whose sum is σ = 2857752. Its totient is φ = 952582.

The previous prime is 1905161. The next prime is 1905179. The reversal of 1905166 is 6615091.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1905161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476290 + ... + 476293.

It is an arithmetic number, because the mean of its divisors is an integer number (714438).

2^1905166 is an apocalyptic number.

1905166 is a deficient number, since it is larger than the sum of its proper divisors (952586).

1905166 is an equidigital number, since it uses as much as digits as its factorization.

1905166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952585.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1905166 is about 1380.2775083294. The cubic root of 1905166 is about 123.9683842394.

It can be divided in two parts, 190 and 5166, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 1905166 in words is "one million, nine hundred five thousand, one hundred sixty-six".