3653748653 has 4 divisors (see below), whose sum is σ = 3656306940. Its totient is φ = 3651190368.

The previous prime is 3653748649. The next prime is 3653748677. The reversal of 3653748653 is 3568473563.

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 810939529 + 2842809124 = 28477^2 + 53318^2 .

It is a cyclic number.

It is not a de Polignac number, because 3653748653 - 2² = 3653748649 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 (3653747653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277000 + ... + 1279857.

It is an arithmetic number, because the mean of its divisors is an integer number (914076735).

Almost surely, 2^3653748653 is an apocalyptic number.

It is an amenable number.

3653748653 is a deficient number, since it is larger than the sum of its proper divisors (2558287).

3653748653 is a wasteful number, since it uses less digits than its factorization.

3653748653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558286.

The product of its digits is 5443200, while the sum is 50.

The square root of 3653748653 is about 60446.2459793824. The cubic root of 3653748653 is about 1540.2086428113.

The spelling of 3653748653 in words is "three billion, six hundred fifty-three million, seven hundred forty-eight thousand, six hundred fifty-three".