2209095901 has 4 divisors (see below), whose sum is σ = 2209429404. Its totient is φ = 2208762400.

The previous prime is 2209095887. The next prime is 2209095913. The reversal of 2209095901 is 1095909022.

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 889590276 + 1319505625 = 29826^2 + 36325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209095901 - 2⁹ = 2209095389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2209095001) 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, 156610 + ... + 170131.

It is an arithmetic number, because the mean of its divisors is an integer number (552357351).

Almost surely, 2^2209095901 is an apocalyptic number.

It is an amenable number.

2209095901 is a deficient number, since it is larger than the sum of its proper divisors (333503).

2209095901 is an equidigital number, since it uses as much as digits as its factorization.

2209095901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333502.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 2209095901 is about 47001.0202123316. The cubic root of 2209095901 is about 1302.3814142157.

The spelling of 2209095901 in words is "two billion, two hundred nine million, ninety-five thousand, nine hundred one".