1825830 has 24 divisors (see below), whose sum is σ = 4747392. Its totient is φ = 486864.

The previous prime is 1825829. The next prime is 1825861. The reversal of 1825830 is 385281.

It is a happy number.

1825830 is a `hidden beast` number, since 1 + 82 + 583 + 0 = 666.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1825794 and 1825803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10054 + ... + 10233.

It is an arithmetic number, because the mean of its divisors is an integer number (197808).

2^1825830 is an apocalyptic number.

1825830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1825830 is an abundant number, since it is smaller than the sum of its proper divisors (2921562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1825830 is a wasteful number, since it uses less digits than its factorization.

1825830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20300 (or 20297 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1825830 is about 1351.2327704729. The cubic root of 1825830 is about 122.2231426316.

The spelling of 1825830 in words is "one million, eight hundred twenty-five thousand, eight hundred thirty".