1180013665 has 8 divisors (see below), whose sum is σ = 1418407848. Its totient is φ = 942416640.

The previous prime is 1180013663. The next prime is 1180013699. The reversal of 1180013665 is 5663100811.

It can be written as a sum of positive squares in 4 ways, for example, as 78304801 + 1101708864 = 8849^2 + 33192^2 .

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

It is not a de Polignac number, because 1180013665 - 2¹ = 1180013663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180013663) 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 7 ways as a sum of consecutive naturals, for example, 196026 + ... + 201955.

It is an arithmetic number, because the mean of its divisors is an integer number (177300981).

Almost surely, 2^1180013665 is an apocalyptic number.

It is an amenable number.

1180013665 is a deficient number, since it is larger than the sum of its proper divisors (238394183).

1180013665 is an equidigital number, since it uses as much as digits as its factorization.

1180013665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398579.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1180013665 is about 34351.3269758244. The cubic root of 1180013665 is about 1056.7258843682.

The spelling of 1180013665 in words is "one billion, one hundred eighty million, thirteen thousand, six hundred sixty-five".