1306868187 has 8 divisors (see below), whose sum is σ = 1742734336. Its totient is φ = 871123752.

The previous prime is 1306868177. The next prime is 1306868191. The reversal of 1306868187 is 7818686031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1306868187 - 2¹¹ = 1306866139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306868177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423 + ... + 51144.

It is an arithmetic number, because the mean of its divisors is an integer number (217841792).

Almost surely, 2^1306868187 is an apocalyptic number.

1306868187 is a deficient number, since it is larger than the sum of its proper divisors (435866149).

1306868187 is an equidigital number, since it uses as much as digits as its factorization.

1306868187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60857.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 1306868187 is about 36150.6319031908. The cubic root of 1306868187 is about 1093.3115313193.

The spelling of 1306868187 in words is "one billion, three hundred six million, eight hundred sixty-eight thousand, one hundred eighty-seven".