3645020752 has 20 divisors (see below), whose sum is σ = 7064024436. Its totient is φ = 1822046720.

The previous prime is 3645020723. The next prime is 3645020761. The reversal of 3645020752 is 2570205463.

It can be written as a sum of positive squares in 2 ways, for example, as 2939374656 + 705646096 = 54216^2 + 26564^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40998 + ... + 94714.

Almost surely, 2^3645020752 is an apocalyptic number.

It is an amenable number.

3645020752 is a deficient number, since it is larger than the sum of its proper divisors (3419003684).

3645020752 is a wasteful number, since it uses less digits than its factorization.

3645020752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57966 (or 57960 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 3645020752 is about 60374.0072547781. The cubic root of 3645020752 is about 1538.9812726143.

The spelling of 3645020752 in words is "three billion, six hundred forty-five million, twenty thousand, seven hundred fifty-two".