2209506745 has 16 divisors (see below), whose sum is σ = 2825981568. Its totient is φ = 1652601600.

The previous prime is 2209506743. The next prime is 2209506773. The reversal of 2209506745 is 5476059022.

2209506745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2209506745 - 2¹ = 2209506743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2209506698 and 2209506707.

It is not an unprimeable number, because it can be changed into a prime (2209506743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73239 + ... + 98908.

It is an arithmetic number, because the mean of its divisors is an integer number (176623848).

Almost surely, 2^2209506745 is an apocalyptic number.

It is an amenable number.

2209506745 is a deficient number, since it is larger than the sum of its proper divisors (616474823).

2209506745 is a wasteful number, since it uses less digits than its factorization.

2209506745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172320.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2209506745 is about 47005.3905951222. The cubic root of 2209506745 is about 1302.4621474577.

The spelling of 2209506745 in words is "two billion, two hundred nine million, five hundred six thousand, seven hundred forty-five".