1045145223 has 24 divisors (see below), whose sum is σ = 1532978720. Its totient is φ = 686076480.

The previous prime is 1045145219. The next prime is 1045145243. The reversal of 1045145223 is 3225415401.

It is not a de Polignac number, because 1045145223 - 2² = 1045145219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045145203) 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 23 ways as a sum of consecutive naturals, for example, 164673 + ... + 170901.

Almost surely, 2^1045145223 is an apocalyptic number.

1045145223 is a deficient number, since it is larger than the sum of its proper divisors (487833497).

1045145223 is a wasteful number, since it uses less digits than its factorization.

1045145223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6519 (or 6516 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1045145223 is about 32328.7058664587. The cubic root of 1045145223 is about 1014.8274672565.

The spelling of 1045145223 in words is "one billion, forty-five million, one hundred forty-five thousand, two hundred twenty-three".