1161323167 has 4 divisors (see below), whose sum is σ = 1161471880. Its totient is φ = 1161174456.

The previous prime is 1161323161. The next prime is 1161323203. The reversal of 1161323167 is 7613231611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1161323167 - 2⁷ = 1161323039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161323161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61953 + ... + 78490.

It is an arithmetic number, because the mean of its divisors is an integer number (290367970).

Almost surely, 2^1161323167 is an apocalyptic number.

1161323167 is a deficient number, since it is larger than the sum of its proper divisors (148713).

1161323167 is an equidigital number, since it uses as much as digits as its factorization.

1161323167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148712.

The product of its digits is 4536, while the sum is 31.

The square root of 1161323167 is about 34078.1919561470. The cubic root of 1161323167 is about 1051.1169269540.

Adding to 1161323167 its reverse (7613231611), we get a palindrome (8774554778).

The spelling of 1161323167 in words is "one billion, one hundred sixty-one million, three hundred twenty-three thousand, one hundred sixty-seven".