1145245305 has 8 divisors (see below), whose sum is σ = 1832392512. Its totient is φ = 610797488.

The previous prime is 1145245303. The next prime is 1145245337. The reversal of 1145245305 is 5035425411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145245305 - 2¹ = 1145245303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145245303) 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 in 7 ways as a sum of consecutive naturals, for example, 38174829 + ... + 38174858.

It is an arithmetic number, because the mean of its divisors is an integer number (229049064).

Almost surely, 2^1145245305 is an apocalyptic number.

1145245305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145245305 is a deficient number, since it is larger than the sum of its proper divisors (687147207).

1145245305 is an equidigital number, since it uses as much as digits as its factorization.

1145245305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76349695.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1145245305 is about 33841.4731505589. The cubic root of 1145245305 is about 1046.2436617565.

The spelling of 1145245305 in words is "one billion, one hundred forty-five million, two hundred forty-five thousand, three hundred five".