1181322361 has 8 divisors (see below), whose sum is σ = 1194545664. Its totient is φ = 1168129200.

The previous prime is 1181322323. The next prime is 1181322371. The reversal of 1181322361 is 1632231811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1181322361 - 2⁹ = 1181321849 is a prime.

It is a super-2 number, since 2×1181322361² = 2791045041197228642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1181322371) 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, 76456 + ... + 90598.

It is an arithmetic number, because the mean of its divisors is an integer number (149318208).

Almost surely, 2^1181322361 is an apocalyptic number.

It is an amenable number.

1181322361 is a deficient number, since it is larger than the sum of its proper divisors (13223303).

1181322361 is a wasteful number, since it uses less digits than its factorization.

1181322361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071.

The product of its digits is 1728, while the sum is 28.

The square root of 1181322361 is about 34370.3703936981. The cubic root of 1181322361 is about 1057.1163945366.

The spelling of 1181322361 in words is "one billion, one hundred eighty-one million, three hundred twenty-two thousand, three hundred sixty-one".