1144866169 has 4 divisors (see below), whose sum is σ = 1145899620. Its totient is φ = 1143832720.

The previous prime is 1144866161. The next prime is 1144866181. The reversal of 1144866169 is 9616684411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9616684411 = 283 ⋅33981217.

It can be written as a sum of positive squares in 2 ways, for example, as 593555769 + 551310400 = 24363^2 + 23480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144866169 - 2³ = 1144866161 is a prime.

It is a super-2 number, since 2×1144866169² = 2621437089841473122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144866161) 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, 515062 + ... + 517279.

It is an arithmetic number, because the mean of its divisors is an integer number (286474905).

Almost surely, 2^1144866169 is an apocalyptic number.

It is an amenable number.

1144866169 is a deficient number, since it is larger than the sum of its proper divisors (1033451).

1144866169 is a wasteful number, since it uses less digits than its factorization.

1144866169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033450.

The product of its digits is 248832, while the sum is 46.

The square root of 1144866169 is about 33835.8710394753. The cubic root of 1144866169 is about 1046.1281952517.

The spelling of 1144866169 in words is "one billion, one hundred forty-four million, eight hundred sixty-six thousand, one hundred sixty-nine".