1161130145 has 8 divisors (see below), whose sum is σ = 1592407104. Its totient is φ = 796203504.

The previous prime is 1161130111. The next prime is 1161130151. The reversal of 1161130145 is 5410311611.

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 1161130145 - 2⁸ = 1161129889 is a prime.

It is a super-3 number, since 3×1161130145³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161130145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16587539 + ... + 16587608.

It is an arithmetic number, because the mean of its divisors is an integer number (199050888).

Almost surely, 2^1161130145 is an apocalyptic number.

It is an amenable number.

1161130145 is a deficient number, since it is larger than the sum of its proper divisors (431276959).

1161130145 is an equidigital number, since it uses as much as digits as its factorization.

1161130145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33175159.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 1161130145 is about 34075.3597926713. The cubic root of 1161130145 is about 1051.0586888055.

Adding to 1161130145 its reverse (5410311611), we get a palindrome (6571441756).

The spelling of 1161130145 in words is "one billion, one hundred sixty-one million, one hundred thirty thousand, one hundred forty-five".