11448358009 has 27 divisors (see below), whose sum is σ = 12857308303. Its totient is φ = 10186114400.

The previous prime is 11448358007. The next prime is 11448358037. The reversal of 11448358009 is 90085384411.

The square root of 11448358009 is 106997.

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., 6724820025 + 4723537984 = 82005^2 + 68728^2 .

It is not a de Polignac number, because 11448358009 - 2¹ = 11448358007 is a prime.

It is a super-2 number, since 2×11448358009² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11448358003) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 83564589 + ... + 83564725.

Almost surely, 2^11448358009 is an apocalyptic number.

11448358009 is the 106997-th square number.

11448358009 is the 53499-th centered octagonal number.

It is an amenable number.

11448358009 is a deficient number, since it is larger than the sum of its proper divisors (1408950294).

11448358009 is an frugal number, since it uses more digits than its factorization.

11448358009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 11448358009 in words is "eleven billion, four hundred forty-eight million, three hundred fifty-eight thousand, nine".