3918125 has 10 divisors (see below), whose sum is σ = 4896870. Its totient is φ = 3134000.

The previous prime is 3918071. The next prime is 3918127. The reversal of 3918125 is 5218193.

It can be written as a sum of positive squares in 5 ways, for example, as 1898884 + 2019241 = 1378^2 + 1421^2 .

It is not a de Polignac number, because 3918125 - 2¹⁰ = 3917101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918127) 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 9 ways as a sum of consecutive naturals, for example, 2510 + ... + 3759.

It is an arithmetic number, because the mean of its divisors is an integer number (489687).

Almost surely, 2^3918125 is an apocalyptic number.

It is an amenable number.

3918125 is a deficient number, since it is larger than the sum of its proper divisors (978745).

3918125 is an frugal number, since it uses more digits than its factorization.

3918125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6289 (or 6274 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 3918125 is about 1979.4254216818. The cubic root of 3918125 is about 157.6495597912.

The spelling of 3918125 in words is "three million, nine hundred eighteen thousand, one hundred twenty-five".