1161327267 has 16 divisors (see below), whose sum is σ = 1749648000. Its totient is φ = 761094792.

The previous prime is 1161327229. The next prime is 1161327283. The reversal of 1161327267 is 7627231611.

It is a happy number.

1161327267 is a `hidden beast` number, since 11 + 61 + 327 + 267 = 666.

It is not a de Polignac number, because 1161327267 - 2²³ = 1152938659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161327227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362917 + ... + 366102.

It is an arithmetic number, because the mean of its divisors is an integer number (109353000).

Almost surely, 2^1161327267 is an apocalyptic number.

1161327267 is a deficient number, since it is larger than the sum of its proper divisors (588320733).

1161327267 is an equidigital number, since it uses as much as digits as its factorization.

1161327267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729087 (or 729081 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 1161327267 is about 34078.2521118675. The cubic root of 1161327267 is about 1051.1181639264.

Adding to 1161327267 its reverse (7627231611), we get a palindrome (8788558878).

The spelling of 1161327267 in words is "one billion, one hundred sixty-one million, three hundred twenty-seven thousand, two hundred sixty-seven".