1652212409 has 4 divisors (see below), whose sum is σ = 1652694900. Its totient is φ = 1651729920.

The previous prime is 1652212403. The next prime is 1652212411. The reversal of 1652212409 is 9042122561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9042122561 = 9767 ⋅925783.

It can be written as a sum of positive squares in 2 ways, for example, as 579846400 + 1072366009 = 24080^2 + 32747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1652212409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1652212403) 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, 236072 + ... + 242969.

It is an arithmetic number, because the mean of its divisors is an integer number (413173725).

Almost surely, 2^1652212409 is an apocalyptic number.

It is an amenable number.

1652212409 is a deficient number, since it is larger than the sum of its proper divisors (482491).

1652212409 is an equidigital number, since it uses as much as digits as its factorization.

1652212409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482490.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1652212409 is about 40647.4157727155. The cubic root of 1652212409 is about 1182.1936616460.

The spelling of 1652212409 in words is "one billion, six hundred fifty-two million, two hundred twelve thousand, four hundred nine".