1152244213 has 4 divisors (see below), whose sum is σ = 1153589580. Its totient is φ = 1150898848.

The previous prime is 1152244193. The next prime is 1152244237. The reversal of 1152244213 is 3124422511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1061651889 + 90592324 = 32583^2 + 9518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1152244213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152244273) 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, 671398 + ... + 673111.

It is an arithmetic number, because the mean of its divisors is an integer number (288397395).

Almost surely, 2^1152244213 is an apocalyptic number.

It is an amenable number.

1152244213 is a deficient number, since it is larger than the sum of its proper divisors (1345367).

1152244213 is an equidigital number, since it uses as much as digits as its factorization.

1152244213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345366.

The product of its digits is 1920, while the sum is 25.

The square root of 1152244213 is about 33944.7229035678. The cubic root of 1152244213 is about 1048.3706287365.

Adding to 1152244213 its reverse (3124422511), we get a palindrome (4276666724).

The spelling of 1152244213 in words is "one billion, one hundred fifty-two million, two hundred forty-four thousand, two hundred thirteen".