1145459047 has 2 divisors, whose sum is σ = 1145459048. Its totient is φ = 1145459046.

The previous prime is 1145459039. The next prime is 1145459111. The reversal of 1145459047 is 7409545411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145459047 - 2³ = 1145459039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145459017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572729523 + 572729524.

It is an arithmetic number, because the mean of its divisors is an integer number (572729524).

Almost surely, 2^1145459047 is an apocalyptic number.

1145459047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145459047 is an equidigital number, since it uses as much as digits as its factorization.

1145459047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 1145459047 is about 33844.6309922268. The cubic root of 1145459047 is about 1046.3087460085.

The spelling of 1145459047 in words is "one billion, one hundred forty-five million, four hundred fifty-nine thousand, forty-seven".