2005454345 has 4 divisors (see below), whose sum is σ = 2406545220. Its totient is φ = 1604363472.

The previous prime is 2005454329. The next prime is 2005454359. The reversal of 2005454345 is 5434545002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5434545002 = 2 ⋅2717272501.

It can be written as a sum of positive squares in 2 ways, for example, as 498539584 + 1506914761 = 22328^2 + 38819^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005454345 - 2⁴ = 2005454329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200545430 + ... + 200545439.

It is an arithmetic number, because the mean of its divisors is an integer number (601636305).

Almost surely, 2^2005454345 is an apocalyptic number.

It is an amenable number.

2005454345 is a deficient number, since it is larger than the sum of its proper divisors (401090875).

2005454345 is an equidigital number, since it uses as much as digits as its factorization.

2005454345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401090874.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 2005454345 is about 44782.2994608361. The cubic root of 2005454345 is about 1261.0653509688.

Adding to 2005454345 its reverse (5434545002), we get a palindrome (7439999347).

It can be divided in two parts, 200 and 5454345, that added together give a palindrome (5454545).

The spelling of 2005454345 in words is "two billion, five million, four hundred fifty-four thousand, three hundred forty-five".