2205288961 has 4 divisors (see below), whose sum is σ = 2242666800. Its totient is φ = 2167911124.

The previous prime is 2205288959. The next prime is 2205288971. The reversal of 2205288961 is 1698825022.

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 not a de Polignac number, because 2205288961 - 2¹ = 2205288959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205288971) 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, 18688831 + ... + 18688948.

It is an arithmetic number, because the mean of its divisors is an integer number (560666700).

Almost surely, 2^2205288961 is an apocalyptic number.

It is an amenable number.

2205288961 is a deficient number, since it is larger than the sum of its proper divisors (37377839).

2205288961 is an equidigital number, since it uses as much as digits as its factorization.

2205288961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37377838.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 2205288961 is about 46960.5042668837. The cubic root of 2205288961 is about 1301.6328517648.

The spelling of 2205288961 in words is "two billion, two hundred five million, two hundred eighty-eight thousand, nine hundred sixty-one".