3645244552 has 16 divisors (see below), whose sum is σ = 7070517900. Its totient is φ = 1759773120.

The previous prime is 3645244531. The next prime is 3645244607. The reversal of 3645244552 is 2554425463.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3645019876 + 224676 = 60374^2 + 474^2 .

It is an unprimeable number.

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, 7855899 + ... + 7856362.

Almost surely, 2^3645244552 is an apocalyptic number.

It is an amenable number.

3645244552 is a deficient number, since it is larger than the sum of its proper divisors (3425273348).

3645244552 is a wasteful number, since it uses less digits than its factorization.

3645244552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712296 (or 15712292 counting only the distinct ones).

The product of its digits is 576000, while the sum is 40.

The square root of 3645244552 is about 60375.8606729544. The cubic root of 3645244552 is about 1539.0127691848.

The spelling of 3645244552 in words is "three billion, six hundred forty-five million, two hundred forty-four thousand, five hundred fifty-two".