2211607945 has 16 divisors (see below), whose sum is σ = 2818568448. Its totient is φ = 1660158720.

The previous prime is 2211607913. The next prime is 2211607963. The reversal of 2211607945 is 5497061122.

It is not a de Polignac number, because 2211607945 - 2⁵ = 2211607913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11169 + ... + 67438.

It is an arithmetic number, because the mean of its divisors is an integer number (176160528).

Almost surely, 2^2211607945 is an apocalyptic number.

It is an amenable number.

2211607945 is a deficient number, since it is larger than the sum of its proper divisors (606960503).

2211607945 is a wasteful number, since it uses less digits than its factorization.

2211607945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78960.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2211607945 is about 47027.7359119063. The cubic root of 2211607945 is about 1302.8748891101.

The spelling of 2211607945 in words is "two billion, two hundred eleven million, six hundred seven thousand, nine hundred forty-five".