2209765648 has 10 divisors (see below), whose sum is σ = 4281420974. Its totient is φ = 1104882816.

The previous prime is 2209765601. The next prime is 2209765661. The reversal of 2209765648 is 8465679022.

It can be written as a sum of positive squares in only one way, i.e., 2052814864 + 156950784 = 45308^2 + 12528^2 .

It is a super-3 number, since 3×2209765648³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 69055161 + ... + 69055192.

Almost surely, 2^2209765648 is an apocalyptic number.

It is an amenable number.

2209765648 is a deficient number, since it is larger than the sum of its proper divisors (2071655326).

2209765648 is a wasteful number, since it uses less digits than its factorization.

2209765648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138110361 (or 138110355 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 2209765648 is about 47008.1444858229. The cubic root of 2209765648 is about 1302.5130182668.

The spelling of 2209765648 in words is "two billion, two hundred nine million, seven hundred sixty-five thousand, six hundred forty-eight".