1145845247 has 2 divisors, whose sum is σ = 1145845248. Its totient is φ = 1145845246.

The previous prime is 1145845243. The next prime is 1145845279. The reversal of 1145845247 is 7425485411.

It is a weak prime.

It is an emirp because it is prime and its reverse (7425485411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145845247 - 2² = 1145845243 is a prime.

It is a super-2 number, since 2×1145845247² = 2625922660144982018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145845241) 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, 572922623 + 572922624.

It is an arithmetic number, because the mean of its divisors is an integer number (572922624).

Almost surely, 2^1145845247 is an apocalyptic number.

1145845247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145845247 is an equidigital number, since it uses as much as digits as its factorization.

1145845247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179200, while the sum is 41.

The square root of 1145845247 is about 33850.3359953782. The cubic root of 1145845247 is about 1046.4263230428.

The spelling of 1145845247 in words is "one billion, one hundred forty-five million, eight hundred forty-five thousand, two hundred forty-seven".