2005541045 has 8 divisors (see below), whose sum is σ = 2439617496.
Its totient is φ = 1582454016.
The previous prime is 2005541033. The next prime is 2005541053. The reversal of 2005541045 is 5401455002.
Adding to 2005541045 its reverse (5401455002), we get a palindrome (7406996047).
It can be written as a sum of positive squares in 4 ways, for example, as 312794596 + 1692746449 = 17686^2 + 41143^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2005541045 - 210 = 2005540021 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746952 + ... + 2747681.
It is an arithmetic number, because the mean of its divisors is an integer number (304952187).
Almost surely, 22005541045 is an apocalyptic number.
It is an amenable number.
2005541045 is a deficient number, since it is larger than the sum of its proper divisors (434076451).
2005541045 is an equidigital number, since it uses as much as digits as its factorization.
2005541045 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5494711.
The product of its (nonzero) digits is 4000, while the sum is 26.
The square root of 2005541045 is about 44783.2674667671.
The cubic root of 2005541045 is about 1261.0835235408.
The spelling of 2005541045 in words is "two billion, five million, five hundred forty-one thousand, forty-five".