1648313 has 4 divisors (see below), whose sum is σ = 1692900. Its totient is φ = 1603728.

The previous prime is 1648291. The next prime is 1648349. The reversal of 1648313 is 3138461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3138461 = 307 ⋅10223.

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 779689 = 932^2 + 883^2 .

It is not a de Polignac number, because 1648313 - 2⁸ = 1648057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1648513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22238 + ... + 22311.

It is an arithmetic number, because the mean of its divisors is an integer number (423225).

2^1648313 is an apocalyptic number.

It is an amenable number.

1648313 is a deficient number, since it is larger than the sum of its proper divisors (44587).

1648313 is an equidigital number, since it uses as much as digits as its factorization.

1648313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44586.

The product of its digits is 1728, while the sum is 26.

The square root of 1648313 is about 1283.8664260740. The cubic root of 1648313 is about 118.1262891902.

The spelling of 1648313 in words is "one million, six hundred forty-eight thousand, three hundred thirteen".