1306536489 has 24 divisors (see below), whose sum is σ = 1940574272. Its totient is φ = 846456480.

The previous prime is 1306536437. The next prime is 1306536499. The reversal of 1306536489 is 9846356031.

1306536489 is a `hidden beast` number, since 1 + 30 + 6 + 536 + 4 + 89 = 666.

It is not a de Polignac number, because 1306536489 - 2⁹ = 1306535977 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306536499) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 352134 + ... + 355824.

Almost surely, 2^1306536489 is an apocalyptic number.

It is an amenable number.

1306536489 is a deficient number, since it is larger than the sum of its proper divisors (634037783).

1306536489 is a wasteful number, since it uses less digits than its factorization.

1306536489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4797 (or 4794 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1306536489 is about 36146.0438914136. The cubic root of 1306536489 is about 1093.2190251946.

The spelling of 1306536489 in words is "one billion, three hundred six million, five hundred thirty-six thousand, four hundred eighty-nine".