1845920 has 48 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 724224.

The previous prime is 1845919. The next prime is 1845931. The reversal of 1845920 is 295481.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13211 + ... + 13349.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2^1845920 is an apocalyptic number.

1845920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1845920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2222640).

1845920 is an abundant number, since it is smaller than the sum of its proper divisors (2599360).

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

1845920 is a wasteful number, since it uses less digits than its factorization.

1845920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1845920 is about 1358.6463851937. The cubic root of 1845920 is about 122.6697909307.

The spelling of 1845920 in words is "one million, eight hundred forty-five thousand, nine hundred twenty".