1149445321 has 2 divisors, whose sum is σ = 1149445322. Its totient is φ = 1149445320.

The previous prime is 1149445279. The next prime is 1149445333. The reversal of 1149445321 is 1235449411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709956025 + 439489296 = 26645^2 + 20964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149445321 - 2¹⁵ = 1149412553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1149445351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574722660 + 574722661.

It is an arithmetic number, because the mean of its divisors is an integer number (574722661).

Almost surely, 2^1149445321 is an apocalyptic number.

It is an amenable number.

1149445321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149445321 is an equidigital number, since it uses as much as digits as its factorization.

1149445321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 1149445321 is about 33903.4706335502. The cubic root of 1149445321 is about 1047.5210822003.

The spelling of 1149445321 in words is "one billion, one hundred forty-nine million, four hundred forty-five thousand, three hundred twenty-one".