3205105045 has 4 divisors (see below), whose sum is σ = 3846126060. Its totient is φ = 2564084032.

The previous prime is 3205104989. The next prime is 3205105049. The reversal of 3205105045 is 5405015023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5405015023 = 39419 ⋅137117.

It can be written as a sum of positive squares in 2 ways, for example, as 2361376836 + 843728209 = 48594^2 + 29047^2 .

It is a cyclic number.

It is not a de Polignac number, because 3205105045 - 2¹⁷ = 3204973973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3205105049) 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, 320510500 + ... + 320510509.

It is an arithmetic number, because the mean of its divisors is an integer number (961531515).

Almost surely, 2^3205105045 is an apocalyptic number.

It is an amenable number.

3205105045 is a deficient number, since it is larger than the sum of its proper divisors (641021015).

3205105045 is an equidigital number, since it uses as much as digits as its factorization.

3205105045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641021014.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 3205105045 is about 56613.6471621463. The cubic root of 3205105045 is about 1474.3958142168.

The spelling of 3205105045 in words is "three billion, two hundred five million, one hundred five thousand, forty-five".