1161322027 has 8 divisors (see below), whose sum is σ = 1189932656. Its totient is φ = 1132784352.

The previous prime is 1161321989. The next prime is 1161322051. The reversal of 1161322027 is 7202231611.

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 1161322027 - 2⁷ = 1161321899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161321992 and 1161322010.

It is not an unprimeable number, because it can be changed into a prime (1161322927) 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, 14713 + ... + 50389.

It is an arithmetic number, because the mean of its divisors is an integer number (148741582).

Almost surely, 2^1161322027 is an apocalyptic number.

1161322027 is a deficient number, since it is larger than the sum of its proper divisors (28610629).

1161322027 is an equidigital number, since it uses as much as digits as its factorization.

1161322027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36477.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1161322027 is about 34078.1752299034. The cubic root of 1161322027 is about 1051.1165830148.

Adding to 1161322027 its reverse (7202231611), we get a palindrome (8363553638).

The spelling of 1161322027 in words is "one billion, one hundred sixty-one million, three hundred twenty-two thousand, twenty-seven".