1188716065 has 8 divisors (see below), whose sum is σ = 1453373928. Its totient is φ = 933029760.

The previous prime is 1188716051. The next prime is 1188716069. The reversal of 1188716065 is 5606178811.

It can be written as a sum of positive squares in 4 ways, for example, as 381928849 + 806787216 = 19543^2 + 28404^2 .

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

It is not a de Polignac number, because 1188716065 - 2¹⁷ = 1188584993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1188716069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242596 + ... + 2243125.

It is an arithmetic number, because the mean of its divisors is an integer number (181671741).

Almost surely, 2^1188716065 is an apocalyptic number.

It is an amenable number.

1188716065 is a deficient number, since it is larger than the sum of its proper divisors (264657863).

1188716065 is an equidigital number, since it uses as much as digits as its factorization.

1188716065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485779.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1188716065 is about 34477.7618908188. The cubic root of 1188716065 is about 1059.3172490105.

The spelling of 1188716065 in words is "one billion, one hundred eighty-eight million, seven hundred sixteen thousand, sixty-five".