1918325 has 6 divisors (see below), whose sum is σ = 2378754. Its totient is φ = 1534640.

The previous prime is 1918313. The next prime is 1918327. The reversal of 1918325 is 5238191.

It can be written as a sum of positive squares in 3 ways, for example, as 677329 + 1240996 = 823^2 + 1114^2 .

It is not a de Polignac number, because 1918325 - 2¹⁰ = 1917301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38342 + ... + 38391.

It is an arithmetic number, because the mean of its divisors is an integer number (396459).

2^1918325 is an apocalyptic number.

It is an amenable number.

1918325 is a deficient number, since it is larger than the sum of its proper divisors (460429).

1918325 is an equidigital number, since it uses as much as digits as its factorization.

1918325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76743 (or 76738 counting only the distinct ones).

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

The square root of 1918325 is about 1385.0361006125. The cubic root of 1918325 is about 124.2531465668.

The spelling of 1918325 in words is "one million, nine hundred eighteen thousand, three hundred twenty-five".