1848421 has 4 divisors (see below), whose sum is σ = 1855372. Its totient is φ = 1841472.

The previous prime is 1848397. The next prime is 1848439. The reversal of 1848421 is 1248481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171396 + 1677025 = 414^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1848421 - 2¹¹ = 1846373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1848421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1848221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3060 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (463843).

2^1848421 is an apocalyptic number.

It is an amenable number.

1848421 is a deficient number, since it is larger than the sum of its proper divisors (6951).

1848421 is an equidigital number, since it uses as much as digits as its factorization.

1848421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6950.

The product of its digits is 2048, while the sum is 28.

The square root of 1848421 is about 1359.5664750206. The cubic root of 1848421 is about 122.7251668758.

The spelling of 1848421 in words is "one million, eight hundred forty-eight thousand, four hundred twenty-one".