2648440369 has 9 divisors (see below), whose sum is σ = 2702136619. Its totient is φ = 2595793720.

The previous prime is 2648440357. The next prime is 2648440393. The reversal of 2648440369 is 9630448462.

The square root of 2648440369 is 51463.

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., 1909253025 + 739187344 = 43695^2 + 27188^2 .

It is not a de Polignac number, because 2648440369 - 2⁷ = 2648440241 is a prime.

It is a super-2 number, since 2×2648440369² = 14028472776297712322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2648444369) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2727054 + ... + 2728024.

Almost surely, 2^2648440369 is an apocalyptic number.

2648440369 is the 51463-rd square number.

2648440369 is the 25732-nd centered octagonal number.

It is an amenable number.

2648440369 is a deficient number, since it is larger than the sum of its proper divisors (53696250).

2648440369 is an frugal number, since it uses more digits than its factorization.

2648440369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 46.

The cubic root of 2648440369 is about 1383.5559710886. Note that the first 3 decimals are identical.

The spelling of 2648440369 in words is "two billion, six hundred forty-eight million, four hundred forty thousand, three hundred sixty-nine".