2104453345 has 4 divisors (see below), whose sum is σ = 2525344020. Its totient is φ = 1683562672.

The previous prime is 2104453343. The next prime is 2104453349. The reversal of 2104453345 is 5433544012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 733380561 + 1371072784 = 27081^2 + 37028^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104453345 - 2¹ = 2104453343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2104453343) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 210445330 + ... + 210445339.

It is an arithmetic number, because the mean of its divisors is an integer number (631336005).

Almost surely, 2^2104453345 is an apocalyptic number.

It is an amenable number.

2104453345 is a deficient number, since it is larger than the sum of its proper divisors (420890675).

2104453345 is an equidigital number, since it uses as much as digits as its factorization.

2104453345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420890674.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 2104453345 is about 45874.3211938880. The cubic root of 2104453345 is about 1281.4837418645.

Adding to 2104453345 its reverse (5433544012), we get a palindrome (7537997357).

The spelling of 2104453345 in words is "two billion, one hundred four million, four hundred fifty-three thousand, three hundred forty-five".