1998325 has 24 divisors (see below), whose sum is σ = 2985920. Its totient is φ = 1296000.

The previous prime is 1998319. The next prime is 1998329. The reversal of 1998325 is 5238991.

It is not a de Polignac number, because 1998325 - 2⁹ = 1997813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3025 + ... + 3625.

2^1998325 is an apocalyptic number.

It is an amenable number.

1998325 is a deficient number, since it is larger than the sum of its proper divisors (987595).

1998325 is a wasteful number, since it uses less digits than its factorization.

1998325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 632 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 1998325 is about 1413.6212363996. The cubic root of 1998325 is about 125.9569223699.

The spelling of 1998325 in words is "one million, nine hundred ninety-eight thousand, three hundred twenty-five".