1144533165 has 16 divisors (see below), whose sum is σ = 1832372928. Its totient is φ = 610044416.

The previous prime is 1144533157. The next prime is 1144533223. The reversal of 1144533165 is 5613354411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1144533165 - 2³ = 1144533157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2974 + ... + 47936.

It is an arithmetic number, because the mean of its divisors is an integer number (114523308).

Almost surely, 2^1144533165 is an apocalyptic number.

1144533165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144533165 is a deficient number, since it is larger than the sum of its proper divisors (687839763).

1144533165 is a wasteful number, since it uses less digits than its factorization.

1144533165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46668.

The product of its digits is 21600, while the sum is 33.

The square root of 1144533165 is about 33830.9498093092. The cubic root of 1144533165 is about 1046.0267572949.

Adding to 1144533165 its reverse (5613354411), we get a palindrome (6757887576).

The spelling of 1144533165 in words is "one billion, one hundred forty-four million, five hundred thirty-three thousand, one hundred sixty-five".