1878325 has 6 divisors (see below), whose sum is σ = 2329154. Its totient is φ = 1502640.

The previous prime is 1878323. The next prime is 1878353. The reversal of 1878325 is 5238781.

It can be written as a sum of positive squares in 3 ways, for example, as 305809 + 1572516 = 553^2 + 1254^2 .

It is not a de Polignac number, because 1878325 - 2¹ = 1878323 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878323) 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 5 ways as a sum of consecutive naturals, for example, 37542 + ... + 37591.

2^1878325 is an apocalyptic number.

It is an amenable number.

1878325 is a deficient number, since it is larger than the sum of its proper divisors (450829).

1878325 is an equidigital number, since it uses as much as digits as its factorization.

1878325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75143 (or 75138 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 1878325 is about 1370.5199743163. The cubic root of 1878325 is about 123.3834509406.

The spelling of 1878325 in words is "one million, eight hundred seventy-eight thousand, three hundred twenty-five".