3653993563 has 4 divisors (see below), whose sum is σ = 3986174808. Its totient is φ = 3321812320.

The previous prime is 3653993561. The next prime is 3653993573.

It is a happy number.

3653993563 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3653993563 - 2¹ = 3653993561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3653993563.

It is not an unprimeable number, because it can be changed into a prime (3653993561) 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, 166090606 + ... + 166090627.

It is an arithmetic number, because the mean of its divisors is an integer number (996543702).

Almost surely, 2^3653993563 is an apocalyptic number.

3653993563 is a deficient number, since it is larger than the sum of its proper divisors (332181245).

3653993563 is a wasteful number, since it uses less digits than its factorization.

3653993563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332181244.

The product of its digits is 5904900, while the sum is 52.

The square root of 3653993563 is about 60448.2717949819. The cubic root of 3653993563 is about 1540.2430553290.

The spelling of 3653993563 in words is "three billion, six hundred fifty-three million, nine hundred ninety-three thousand, five hundred sixty-three".