1652664209 has 16 divisors (see below), whose sum is σ = 1993776000. Its totient is φ = 1367713872.

The previous prime is 1652664161. The next prime is 1652664257. The reversal of 1652664209 is 9024662561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1652664161) and next prime (1652664257).

It is not a de Polignac number, because 1652664209 - 2⁸ = 1652663953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1652664259) 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 15 ways as a sum of consecutive naturals, for example, 73127 + ... + 93020.

It is an arithmetic number, because the mean of its divisors is an integer number (124611000).

Almost surely, 2^1652664209 is an apocalyptic number.

It is an amenable number.

1652664209 is a deficient number, since it is larger than the sum of its proper divisors (341111791).

1652664209 is an equidigital number, since it uses as much as digits as its factorization.

1652664209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166197 (or 166183 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1652664209 is about 40652.9729417173. The cubic root of 1652664209 is about 1182.3014093779.

The spelling of 1652664209 in words is "one billion, six hundred fifty-two million, six hundred sixty-four thousand, two hundred nine".