1149445459 has 2 divisors, whose sum is σ = 1149445460. Its totient is φ = 1149445458.

The previous prime is 1149445433. The next prime is 1149445511. The reversal of 1149445459 is 9545449411.

It is a weak prime.

It is an emirp because it is prime and its reverse (9545449411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1149445459 - 2¹¹ = 1149443411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1149448459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574722729 + 574722730.

It is an arithmetic number, because the mean of its divisors is an integer number (574722730).

Almost surely, 2^1149445459 is an apocalyptic number.

1149445459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149445459 is an equidigital number, since it uses as much as digits as its factorization.

1149445459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 46.

The square root of 1149445459 is about 33903.4726687400. The cubic root of 1149445459 is about 1047.5211241214.

It can be divided in two parts, 11494 and 45459, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 1149445459 in words is "one billion, one hundred forty-nine million, four hundred forty-five thousand, four hundred fifty-nine".