11044538649 has 15 divisors (see below), whose sum is σ = 16500044847. Its totient is φ = 7362395208.

The previous prime is 11044538641. The next prime is 11044538683. The reversal of 11044538649 is 94683544011.

The square root of 11044538649 is 105093.

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

11044538649 is a `hidden beast` number, since 1 + 10 + 44 + 538 + 64 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9439094025 + 1605444624 = 97155^2 + 40068^2 .

It is not a de Polignac number, because 11044538649 - 2³ = 11044538641 is a prime.

It is a super-3 number, since 3×11044538649³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11044538641) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 939999 + ... + 951675.

Almost surely, 2^11044538649 is an apocalyptic number.

11044538649 is the 105093-rd square number.

11044538649 is the 52547-th centered octagonal number.

It is an amenable number.

11044538649 is a deficient number, since it is larger than the sum of its proper divisors (5455506198).

11044538649 is an frugal number, since it uses more digits than its factorization.

11044538649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23366 (or 11680 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 11044538649 in words is "eleven billion, forty-four million, five hundred thirty-eight thousand, six hundred forty-nine".