13548261609 has 33 divisors (see below), whose sum is σ = 20364792733. Its totient is φ = 9013318092.

The previous prime is 13548261599. The next prime is 13548261631. The reversal of 13548261609 is 90616284531.

The square root of 13548261609 is 116397.

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

13548261609 is a `hidden beast` number, since 1 + 3 + 5 + 482 + 6 + 160 + 9 = 666.

It is not a de Polignac number, because 13548261609 - 2¹⁷ = 13548130537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13548261659) by changing a digit.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 28284232 + ... + 28284710.

Almost surely, 2^13548261609 is an apocalyptic number.

13548261609 is the 116397-th square number.

13548261609 is the 58199-th centered octagonal number.

It is an amenable number.

13548261609 is a deficient number, since it is larger than the sum of its proper divisors (6816531124).

13548261609 is an frugal number, since it uses more digits than its factorization.

13548261609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 13548261609 in words is "thirteen billion, five hundred forty-eight million, two hundred sixty-one thousand, six hundred nine".