3648572905 has 4 divisors (see below), whose sum is σ = 4378287492. Its totient is φ = 2918858320.

The previous prime is 3648572887. The next prime is 3648572909. The reversal of 3648572905 is 5092758463.

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 659873344 + 2988699561 = 25688^2 + 54669^2 .

It is not a de Polignac number, because 3648572905 - 2¹⁹ = 3648048617 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648572909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364857286 + ... + 364857295.

It is an arithmetic number, because the mean of its divisors is an integer number (1094571873).

Almost surely, 2^3648572905 is an apocalyptic number.

It is an amenable number.

3648572905 is a deficient number, since it is larger than the sum of its proper divisors (729714587).

3648572905 is an equidigital number, since it uses as much as digits as its factorization.

3648572905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729714586.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The square root of 3648572905 is about 60403.4179910376. The cubic root of 3648572905 is about 1539.4810340213.

The spelling of 3648572905 in words is "three billion, six hundred forty-eight million, five hundred seventy-two thousand, nine hundred five".