1152243161 has 8 divisors (see below), whose sum is σ = 1175363784. Its totient is φ = 1129173760.

The previous prime is 1152243137. The next prime is 1152243173. The reversal of 1152243161 is 1613422511.

It can be written as a sum of positive squares in 4 ways, for example, as 289000000 + 863243161 = 17000^2 + 29381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1152243161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1152243161.

It is not an unprimeable number, because it can be changed into a prime (1152243761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34355 + ... + 59031.

It is an arithmetic number, because the mean of its divisors is an integer number (146920473).

Almost surely, 2^1152243161 is an apocalyptic number.

It is an amenable number.

1152243161 is a deficient number, since it is larger than the sum of its proper divisors (23120623).

1152243161 is an equidigital number, since it uses as much as digits as its factorization.

1152243161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25611.

The product of its digits is 1440, while the sum is 26.

The square root of 1152243161 is about 33944.7074077830. The cubic root of 1152243161 is about 1048.3703096820.

Adding to 1152243161 its reverse (1613422511), we get a palindrome (2765665672).

The spelling of 1152243161 in words is "one billion, one hundred fifty-two million, two hundred forty-three thousand, one hundred sixty-one".