1161441073 has 4 divisors (see below), whose sum is σ = 1250782708. Its totient is φ = 1072099440.

The previous prime is 1161441067. The next prime is 1161441077. The reversal of 1161441073 is 3701441611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3701441611 = 7 ⋅528777373.

It can be written as a sum of positive squares in 2 ways, for example, as 244078129 + 917362944 = 15623^2 + 30288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161441073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161441077) 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, 44670798 + ... + 44670823.

It is an arithmetic number, because the mean of its divisors is an integer number (312695677).

Almost surely, 2^1161441073 is an apocalyptic number.

1161441073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1161441073 is a deficient number, since it is larger than the sum of its proper divisors (89341635).

1161441073 is an equidigital number, since it uses as much as digits as its factorization.

1161441073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89341634.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1161441073 is about 34079.9218455677. The cubic root of 1161441073 is about 1051.1524981030.

Adding to 1161441073 its reverse (3701441611), we get a palindrome (4862882684).

The spelling of 1161441073 in words is "one billion, one hundred sixty-one million, four hundred forty-one thousand, seventy-three".