1181282665 has 16 divisors (see below), whose sum is σ = 1468342080. Its totient is φ = 911243200.

The previous prime is 1181282657. The next prime is 1181282681. The reversal of 1181282665 is 5662821811.

It is a happy number.

It is not a de Polignac number, because 1181282665 - 2³ = 1181282657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114990 + ... + 124840.

It is an arithmetic number, because the mean of its divisors is an integer number (91771380).

Almost surely, 2^1181282665 is an apocalyptic number.

It is an amenable number.

1181282665 is a deficient number, since it is larger than the sum of its proper divisors (287059415).

1181282665 is an equidigital number, since it uses as much as digits as its factorization.

1181282665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712.

The product of its digits is 46080, while the sum is 40.

The square root of 1181282665 is about 34369.7929147093. The cubic root of 1181282665 is about 1057.1045536358.

The spelling of 1181282665 in words is "one billion, one hundred eighty-one million, two hundred eighty-two thousand, six hundred sixty-five".