1866873 has 8 divisors (see below), whose sum is σ = 2511648. Its totient is φ = 1233344.

The previous prime is 1866871. The next prime is 1866877. The reversal of 1866873 is 3786681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1866873 - 2¹ = 1866871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1866871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2415 + ... + 3092.

It is an arithmetic number, because the mean of its divisors is an integer number (313956).

2^1866873 is an apocalyptic number.

It is an amenable number.

1866873 is a deficient number, since it is larger than the sum of its proper divisors (644775).

1866873 is a wasteful number, since it uses less digits than its factorization.

1866873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623.

The product of its digits is 48384, while the sum is 39.

The square root of 1866873 is about 1366.3356103096. The cubic root of 1866873 is about 123.1321865303.

The spelling of 1866873 in words is "one million, eight hundred sixty-six thousand, eight hundred seventy-three".