1144453117 has 4 divisors (see below), whose sum is σ = 1145227356. Its totient is φ = 1143678880.

The previous prime is 1144453111. The next prime is 1144453153. The reversal of 1144453117 is 7113544411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7113544411 = 911 ⋅7808501.

It can be written as a sum of positive squares in 2 ways, for example, as 778075236 + 366377881 = 27894^2 + 19141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144453117 - 2³ = 1144453109 is a prime.

It is a super-2 number, since 2×1144453117² = 2619545874022031378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144453111) 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, 384898 + ... + 387859.

It is an arithmetic number, because the mean of its divisors is an integer number (286306839).

Almost surely, 2^1144453117 is an apocalyptic number.

It is an amenable number.

1144453117 is a deficient number, since it is larger than the sum of its proper divisors (774239).

1144453117 is an equidigital number, since it uses as much as digits as its factorization.

1144453117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774238.

The product of its digits is 6720, while the sum is 31.

The square root of 1144453117 is about 33829.7667299081. The cubic root of 1144453117 is about 1046.0023705538.

Adding to 1144453117 its reverse (7113544411), we get a palindrome (8257997528).

The spelling of 1144453117 in words is "one billion, one hundred forty-four million, four hundred fifty-three thousand, one hundred seventeen".