1648089 has 12 divisors (see below), whose sum is σ = 2398500. Its totient is φ = 1090464.

The previous prime is 1648081. The next prime is 1648181. The reversal of 1648089 is 9808461.

It is a happy number.

1648089 is a `hidden beast` number, since 1 + 648 + 0 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 632025 = 1008^2 + 795^2 .

It is not a de Polignac number, because 1648089 - 2³ = 1648081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648081) 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 11 ways as a sum of consecutive naturals, for example, 727 + ... + 1955.

It is an arithmetic number, because the mean of its divisors is an integer number (199875).

2^1648089 is an apocalyptic number.

It is an amenable number.

1648089 is a deficient number, since it is larger than the sum of its proper divisors (750411).

1648089 is a wasteful number, since it uses less digits than its factorization.

1648089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1648089 is about 1283.7791866205. The cubic root of 1648089 is about 118.1209379640.

The spelling of 1648089 in words is "one million, six hundred forty-eight thousand, eighty-nine".