1648841 has 4 divisors (see below), whose sum is σ = 1661952. Its totient is φ = 1635732.

The previous prime is 1648837. The next prime is 1648879. The reversal of 1648841 is 1488461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1648841 - 2² = 1648837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1648798 and 1648807.

It is not an unprimeable number, because it can be changed into a prime (1648811) 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, 6365 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (415488).

2^1648841 is an apocalyptic number.

It is an amenable number.

1648841 is a deficient number, since it is larger than the sum of its proper divisors (13111).

1648841 is a wasteful number, since it uses less digits than its factorization.

1648841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13110.

The product of its digits is 6144, while the sum is 32.

The square root of 1648841 is about 1284.0720384776. The cubic root of 1648841 is about 118.1389008771.

It can be divided in two parts, 16 and 48841, that multiplied together give a square (781456 = 884²).

The spelling of 1648841 in words is "one million, six hundred forty-eight thousand, eight hundred forty-one".