1023440545 has 32 divisors (see below), whose sum is σ = 1361670912. Its totient is φ = 734502912.

The previous prime is 1023440527. The next prime is 1023440569. The reversal of 1023440545 is 5450443201.

It is a cyclic number.

It is not a de Polignac number, because 1023440545 - 2²⁵ = 989886113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 689374 + ... + 690856.

It is an arithmetic number, because the mean of its divisors is an integer number (42552216).

Almost surely, 2^1023440545 is an apocalyptic number.

It is an amenable number.

1023440545 is a deficient number, since it is larger than the sum of its proper divisors (338230367).

1023440545 is a wasteful number, since it uses less digits than its factorization.

1023440545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1023440545 is about 31991.2573213370. The cubic root of 1023440545 is about 1007.7532468074.

Adding to 1023440545 its reverse (5450443201), we get a palindrome (6473883746).

The spelling of 1023440545 in words is "one billion, twenty-three million, four hundred forty thousand, five hundred forty-five".