1223562745 has 4 divisors (see below), whose sum is σ = 1468275300. Its totient is φ = 978850192.

The previous prime is 1223562737. The next prime is 1223562749. The reversal of 1223562745 is 5472653221.

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 184660921 + 1038901824 = 13589^2 + 32232^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223562745 - 2³ = 1223562737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223562749) 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 in 3 ways as a sum of consecutive naturals, for example, 122356270 + ... + 122356279.

It is an arithmetic number, because the mean of its divisors is an integer number (367068825).

Almost surely, 2^1223562745 is an apocalyptic number.

It is an amenable number.

1223562745 is a deficient number, since it is larger than the sum of its proper divisors (244712555).

1223562745 is an equidigital number, since it uses as much as digits as its factorization.

1223562745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244712554.

The product of its digits is 100800, while the sum is 37.

The square root of 1223562745 is about 34979.4617597241. The cubic root of 1223562745 is about 1069.5688556170.

The spelling of 1223562745 in words is "one billion, two hundred twenty-three million, five hundred sixty-two thousand, seven hundred forty-five".