1144455491 has 2 divisors, whose sum is σ = 1144455492. Its totient is φ = 1144455490.

The previous prime is 1144455479. The next prime is 1144455497. The reversal of 1144455491 is 1945544411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1144455491 - 2³⁰ = 70713667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1144455497) 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, 572227745 + 572227746.

It is an arithmetic number, because the mean of its divisors is an integer number (572227746).

Almost surely, 2^1144455491 is an apocalyptic number.

1144455491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144455491 is an equidigital number, since it uses as much as digits as its factorization.

1144455491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 38.

The square root of 1144455491 is about 33829.8018173326. The cubic root of 1144455491 is about 1046.0030938127.

The spelling of 1144455491 in words is "one billion, one hundred forty-four million, four hundred fifty-five thousand, four hundred ninety-one".