1145226305 has 4 divisors (see below), whose sum is σ = 1374271572. Its totient is φ = 916181040.

The previous prime is 1145226287. The next prime is 1145226319. The reversal of 1145226305 is 5036225411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205865104 + 939361201 = 14348^2 + 30649^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1145226305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114522626 + ... + 114522635.

It is an arithmetic number, because the mean of its divisors is an integer number (343567893).

Almost surely, 2^1145226305 is an apocalyptic number.

It is an amenable number.

1145226305 is a deficient number, since it is larger than the sum of its proper divisors (229045267).

1145226305 is an equidigital number, since it uses as much as digits as its factorization.

1145226305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229045266.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1145226305 is about 33841.1924287546. The cubic root of 1145226305 is about 1046.2378758812.

The spelling of 1145226305 in words is "one billion, one hundred forty-five million, two hundred twenty-six thousand, three hundred five".