1652664561 has 8 divisors (see below), whose sum is σ = 2224946880. Its totient is φ = 1091079312.

The previous prime is 1652664523. The next prime is 1652664581. The reversal of 1652664561 is 1654662561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1652664561 - 2⁹ = 1652664049 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1652664511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2673906 + ... + 2674523.

It is an arithmetic number, because the mean of its divisors is an integer number (278118360).

Almost surely, 2^1652664561 is an apocalyptic number.

It is an amenable number.

1652664561 is a deficient number, since it is larger than the sum of its proper divisors (572282319).

1652664561 is a wasteful number, since it uses less digits than its factorization.

1652664561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5348535.

The product of its digits is 259200, while the sum is 42.

The square root of 1652664561 is about 40652.9772710438. The cubic root of 1652664561 is about 1182.3014933171.

The spelling of 1652664561 in words is "one billion, six hundred fifty-two million, six hundred sixty-four thousand, five hundred sixty-one".