1161444273 has 12 divisors (see below), whose sum is σ = 1702172304. Its totient is φ = 703905400.

The previous prime is 1161444259. The next prime is 1161444281. The reversal of 1161444273 is 3724441611.

1161444273 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1161444273 - 2⁴ = 1161444257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1161444223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1599423 + ... + 1600148.

It is an arithmetic number, because the mean of its divisors is an integer number (141847692).

Almost surely, 2^1161444273 is an apocalyptic number.

It is an amenable number.

1161444273 is a deficient number, since it is larger than the sum of its proper divisors (540728031).

1161444273 is a wasteful number, since it uses less digits than its factorization.

1161444273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199596 (or 3199585 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 1161444273 is about 34079.9687939998. The cubic root of 1161444273 is about 1051.1534634799.

Adding to 1161444273 its reverse (3724441611), we get a palindrome (4885885884).

The spelling of 1161444273 in words is "one billion, one hundred sixty-one million, four hundred forty-four thousand, two hundred seventy-three".