1878125 has 12 divisors (see below), whose sum is σ = 2351412. Its totient is φ = 1500000.

The previous prime is 1878119. The next prime is 1878139. The reversal of 1878125 is 5218781.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1247689 + 630436 = 1117^2 + 794^2 .

It is not a de Polignac number, because 1878125 - 2⁶ = 1878061 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1878091 and 1878100.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2825 + ... + 3425.

It is an arithmetic number, because the mean of its divisors is an integer number (195951).

2^1878125 is an apocalyptic number.

It is an amenable number.

1878125 is a deficient number, since it is larger than the sum of its proper divisors (473287).

1878125 is an frugal number, since it uses more digits than its factorization.

1878125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 606 counting only the distinct ones).

The product of its digits is 4480, while the sum is 32.

The square root of 1878125 is about 1370.4470073666. The cubic root of 1878125 is about 123.3790715838.

The spelling of 1878125 in words is "one million, eight hundred seventy-eight thousand, one hundred twenty-five".