3648635533 has 4 divisors (see below), whose sum is σ = 3661088508. Its totient is φ = 3636182560.

The previous prime is 3648635477. The next prime is 3648635537. The reversal of 3648635533 is 3355368463.

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 1645356969 + 2003278564 = 40563^2 + 44758^2 .

It is a cyclic number.

It is not a de Polignac number, because 3648635533 - 2⁹ = 3648635021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648635537) 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 in 3 ways as a sum of consecutive naturals, for example, 6226048 + ... + 6226633.

It is an arithmetic number, because the mean of its divisors is an integer number (915272127).

Almost surely, 2^3648635533 is an apocalyptic number.

It is an amenable number.

3648635533 is a deficient number, since it is larger than the sum of its proper divisors (12452975).

3648635533 is a wasteful number, since it uses less digits than its factorization.

3648635533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452974.

The product of its digits is 2332800, while the sum is 46.

The square root of 3648635533 is about 60403.9364031849. The cubic root of 3648635533 is about 1539.4898424029.

The spelling of 3648635533 in words is "three billion, six hundred forty-eight million, six hundred thirty-five thousand, five hundred thirty-three".