1144505563 has 4 divisors (see below), whose sum is σ = 1145258568. Its totient is φ = 1143752560.

The previous prime is 1144505539. The next prime is 1144505573. The reversal of 1144505563 is 3655054411.

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

It is a cyclic number.

It is not a de Polignac number, because 1144505563 - 2⁹ = 1144505051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144505513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374218 + ... + 377263.

It is an arithmetic number, because the mean of its divisors is an integer number (286314642).

Almost surely, 2^1144505563 is an apocalyptic number.

1144505563 is a deficient number, since it is larger than the sum of its proper divisors (753005).

1144505563 is an equidigital number, since it uses as much as digits as its factorization.

1144505563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753004.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1144505563 is about 33830.5418667807. The cubic root of 1144505563 is about 1046.0183484334.

Adding to 1144505563 its reverse (3655054411), we get a palindrome (4799559974).

The spelling of 1144505563 in words is "one billion, one hundred forty-four million, five hundred five thousand, five hundred sixty-three".