2209564036 has 27 divisors (see below), whose sum is σ = 4084262469. Its totient is φ = 1045789488.

The previous prime is 2209564003. The next prime is 2209564037. The reversal of 2209564036 is 6304659022.

The square root of 2209564036 is 47006.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1668722500 + 540841536 = 40850^2 + 23256^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2209563986 and 2209564004.

It is not an unprimeable number, because it can be changed into a prime (2209564037) 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 8 ways as a sum of consecutive naturals, for example, 1785610 + ... + 1786846.

Almost surely, 2^2209564036 is an apocalyptic number.

2209564036 is the 47006-th square number.

It is an amenable number.

2209564036 is a deficient number, since it is larger than the sum of its proper divisors (1874698433).

2209564036 is an equidigital number, since it uses as much as digits as its factorization.

2209564036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The cubic root of 2209564036 is about 1302.4734046782.

The spelling of 2209564036 in words is "two billion, two hundred nine million, five hundred sixty-four thousand, thirty-six".