1149236321 has 2 divisors, whose sum is σ = 1149236322. Its totient is φ = 1149236320.

The previous prime is 1149236287. The next prime is 1149236323. The reversal of 1149236321 is 1236329411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903844096 + 245392225 = 30064^2 + 15665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149236321 - 2¹⁴ = 1149219937 is a prime.

Together with 1149236323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1149236323) 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 as a sum of consecutive naturals, namely, 574618160 + 574618161.

It is an arithmetic number, because the mean of its divisors is an integer number (574618161).

Almost surely, 2^1149236321 is an apocalyptic number.

It is an amenable number.

1149236321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149236321 is an equidigital number, since it uses as much as digits as its factorization.

1149236321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 1149236321 is about 33900.3882131164. The cubic root of 1149236321 is about 1047.4575892057.

The spelling of 1149236321 in words is "one billion, one hundred forty-nine million, two hundred thirty-six thousand, three hundred twenty-one".