1180161000 has 96 divisors (see below), whose sum is σ = 3988974600. Its totient is φ = 314707200.

The previous prime is 1180160999. The next prime is 1180161001. The reversal of 1180161000 is 1610811.

It is an interprime number because it is at equal distance from previous prime (1180160999) and next prime (1180161001).

It can be written as a sum of positive squares in 4 ways, for example, as 522853956 + 657307044 = 22866^2 + 25638^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1180161001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56565 + ... + 74564.

Almost surely, 2^1180161000 is an apocalyptic number.

1180161000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1180161000 is an abundant number, since it is smaller than the sum of its proper divisors (2808813600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1180161000 is a wasteful number, since it uses less digits than its factorization.

1180161000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131156 (or 131139 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 1180161000 is about 34353.4714403072. The cubic root of 1180161000 is about 1056.7698630196.

Adding to 1180161000 its reverse (1610811), we get a palindrome (1181771811).

The spelling of 1180161000 in words is "one billion, one hundred eighty million, one hundred sixty-one thousand".