1652564661 has 16 divisors (see below), whose sum is σ = 2416324608. Its totient is φ = 996306800.

The previous prime is 1652564657. The next prime is 1652564677. The reversal of 1652564661 is 1664652561.

It is a cyclic number.

It is not a de Polignac number, because 1652564661 - 2² = 1652564657 is a prime.

It is a super-3 number, since 3×1652564661³ (a number of 29 digits) contains 333 as substring.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652564561) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 124791 + ... + 137396.

It is an arithmetic number, because the mean of its divisors is an integer number (151020288).

Almost surely, 2^1652564661 is an apocalyptic number.

1652564661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1652564661 is a deficient number, since it is larger than the sum of its proper divisors (763759947).

1652564661 is a wasteful number, since it uses less digits than its factorization.

1652564661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262392.

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

The square root of 1652564661 is about 40651.7485601788. The cubic root of 1652564661 is about 1182.2776703140.

The spelling of 1652564661 in words is "one billion, six hundred fifty-two million, five hundred sixty-four thousand, six hundred sixty-one".