1144435161 has 4 divisors (see below), whose sum is σ = 1525913552. Its totient is φ = 762956772.

The previous prime is 1144435147. The next prime is 1144435183. The reversal of 1144435161 is 1615344411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1144435161 - 2⁵ = 1144435129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144435111) 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, 190739191 + ... + 190739196.

It is an arithmetic number, because the mean of its divisors is an integer number (381478388).

Almost surely, 2^1144435161 is an apocalyptic number.

It is an amenable number.

1144435161 is a deficient number, since it is larger than the sum of its proper divisors (381478391).

1144435161 is an equidigital number, since it uses as much as digits as its factorization.

1144435161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381478390.

The product of its digits is 5760, while the sum is 30.

The square root of 1144435161 is about 33829.5013412849. The cubic root of 1144435161 is about 1045.9969000758.

Adding to 1144435161 its reverse (1615344411), we get a palindrome (2759779572).

The spelling of 1144435161 in words is "one billion, one hundred forty-four million, four hundred thirty-five thousand, one hundred sixty-one".