1866834 has 32 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 615600.

The previous prime is 1866833. The next prime is 1866847. The reversal of 1866834 is 4386681.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1866833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9679 + ... + 9869.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2^1866834 is an apocalyptic number.

1866834 is an abundant number, since it is smaller than the sum of its proper divisors (2326446).

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

1866834 is a wasteful number, since it uses less digits than its factorization.

1866834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 377 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1866834 is about 1366.3213384852. The cubic root of 1866834 is about 123.1313290914.

The spelling of 1866834 in words is "one million, eight hundred sixty-six thousand, eight hundred thirty-four".