1145266645 has 4 divisors (see below), whose sum is σ = 1374319980. Its totient is φ = 916213312.

The previous prime is 1145266631. The next prime is 1145266649. The reversal of 1145266645 is 5466625411.

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 357285604 + 787981041 = 18902^2 + 28071^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145266645 - 2⁵ = 1145266613 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1145266598 and 1145266607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145266649) 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 3 ways as a sum of consecutive naturals, for example, 114526660 + ... + 114526669.

It is an arithmetic number, because the mean of its divisors is an integer number (343579995).

Almost surely, 2^1145266645 is an apocalyptic number.

It is an amenable number.

1145266645 is a deficient number, since it is larger than the sum of its proper divisors (229053335).

1145266645 is an equidigital number, since it uses as much as digits as its factorization.

1145266645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229053334.

The product of its digits is 172800, while the sum is 40.

The square root of 1145266645 is about 33841.7884426932. The cubic root of 1145266645 is about 1046.2501601317.

The spelling of 1145266645 in words is "one billion, one hundred forty-five million, two hundred sixty-six thousand, six hundred forty-five".