1205530544 has 60 divisors (see below), whose sum is σ = 2526739320. Its totient is φ = 555321600.

The previous prime is 1205530523. The next prime is 1205530561. The reversal of 1205530544 is 4450355021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3876149 + ... + 3876459.

It is an arithmetic number, because the mean of its divisors is an integer number (42112322).

Almost surely, 2^1205530544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205530544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263369660).

1205530544 is an abundant number, since it is smaller than the sum of its proper divisors (1321208776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205530544 is an equidigital number, since it uses as much as digits as its factorization.

1205530544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1205530544 is about 34720.7509135387. The cubic root of 1205530544 is about 1064.2885898172.

Adding to 1205530544 its reverse (4450355021), we get a palindrome (5655885565).

The spelling of 1205530544 in words is "one billion, two hundred five million, five hundred thirty thousand, five hundred forty-four".