1806850 has 12 divisors (see below), whose sum is σ = 3360834. Its totient is φ = 722720.

The previous prime is 1806841. The next prime is 1806859. The reversal of 1806850 is 586081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1806841) and next prime (1806859).

It can be written as a sum of positive squares in 3 ways, for example, as 1413721 + 393129 = 1189^2 + 627^2 .

It is not an unprimeable number, because it can be changed into a prime (1806859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18019 + ... + 18118.

2^1806850 is an apocalyptic number.

1806850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1806850 is a deficient number, since it is larger than the sum of its proper divisors (1553984).

1806850 is a wasteful number, since it uses less digits than its factorization.

1806850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36149 (or 36144 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1806850 is about 1344.1912066369. The cubic root of 1806850 is about 121.7981522994.

The spelling of 1806850 in words is "one million, eight hundred six thousand, eight hundred fifty".