1868873 has 4 divisors (see below), whose sum is σ = 1894548. Its totient is φ = 1843200.

The previous prime is 1868863. The next prime is 1868879. The reversal of 1868873 is 3788681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3788681 = 13 ⋅291437.

It can be written as a sum of positive squares in 2 ways, for example, as 1630729 + 238144 = 1277^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868873 - 2⁸ = 1868617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868873.

It is not an unprimeable number, because it can be changed into a prime (1868879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12728 + ... + 12873.

It is an arithmetic number, because the mean of its divisors is an integer number (473637).

2^1868873 is an apocalyptic number.

It is an amenable number.

1868873 is a deficient number, since it is larger than the sum of its proper divisors (25675).

1868873 is an equidigital number, since it uses as much as digits as its factorization.

1868873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25674.

The product of its digits is 64512, while the sum is 41.

The square root of 1868873 is about 1367.0672990018. The cubic root of 1868873 is about 123.1761417580.

It can be divided in two parts, 18688 and 73, that multiplied together give a square (1364224 = 1168²).

The spelling of 1868873 in words is "one million, eight hundred sixty-eight thousand, eight hundred seventy-three".