1803244648 has 8 divisors (see below), whose sum is σ = 3381083730. Its totient is φ = 901622320.

The previous prime is 1803244601. The next prime is 1803244649. The reversal of 1803244648 is 8464423081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1599840004 + 203404644 = 39998^2 + 14262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1803244648.

It is not an unprimeable number, because it can be changed into a prime (1803244649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112702783 + ... + 112702798.

Almost surely, 2^1803244648 is an apocalyptic number.

It is an amenable number.

1803244648 is a deficient number, since it is larger than the sum of its proper divisors (1577839082).

1803244648 is a wasteful number, since it uses less digits than its factorization.

1803244648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225405587 (or 225405583 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 1803244648 is about 42464.6281980662. The cubic root of 1803244648 is about 1217.1708716573.

The spelling of 1803244648 in words is "one billion, eight hundred three million, two hundred forty-four thousand, six hundred forty-eight".