2245805669 has 4 divisors (see below), whose sum is σ = 2245948896. Its totient is φ = 2245662444.

The previous prime is 2245805657. The next prime is 2245805699. The reversal of 2245805669 is 9665085422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2245805669 is a prime.

It is a super-2 number, since 2×2245805669² = 10087286205825075122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245805699) 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, 44729 + ... + 80574.

It is an arithmetic number, because the mean of its divisors is an integer number (561487224).

Almost surely, 2^2245805669 is an apocalyptic number.

It is an amenable number.

2245805669 is a deficient number, since it is larger than the sum of its proper divisors (143227).

2245805669 is a wasteful number, since it uses less digits than its factorization.

2245805669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143226.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 2245805669 is about 47389.9321480839. The cubic root of 2245805669 is about 1309.5559493748. Note that the first 3 decimals are identical.

The spelling of 2245805669 in words is "two billion, two hundred forty-five million, eight hundred five thousand, six hundred sixty-nine".