1123444161 has 48 divisors (see below), whose sum is σ = 1928070144. Its totient is φ = 640365264.

The previous prime is 1123444151. The next prime is 1123444171. The reversal of 1123444161 is 1614443211.

1123444161 is a `hidden beast` number, since 11 + 234 + 4 + 416 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1123444151) and next prime (1123444171).

It is not a de Polignac number, because 1123444161 - 2⁵ = 1123444129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1123444151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1161300 + ... + 1162266.

It is an arithmetic number, because the mean of its divisors is an integer number (40168128).

Almost surely, 2^1123444161 is an apocalyptic number.

It is an amenable number.

1123444161 is a deficient number, since it is larger than the sum of its proper divisors (804625983).

1123444161 is an frugal number, since it uses more digits than its factorization.

1123444161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 1660 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 1123444161 is about 33517.8185596855. The cubic root of 1123444161 is about 1039.5622421080.

Adding to 1123444161 its reverse (1614443211), we get a palindrome (2737887372).

The spelling of 1123444161 in words is "one billion, one hundred twenty-three million, four hundred forty-four thousand, one hundred sixty-one".