2209515648 has 64 divisors (see below), whose sum is σ = 5965302720. Its totient is φ = 724423680.

The previous prime is 2209515617. The next prime is 2209515667. The reversal of 2209515648 is 8465159022.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×2209515648³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23740 + ... + 70587.

It is an arithmetic number, because the mean of its divisors is an integer number (93207855).

Almost surely, 2^2209515648 is an apocalyptic number.

It is an amenable number.

2209515648 is an abundant number, since it is smaller than the sum of its proper divisors (3755787072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2209515648 is an equidigital number, since it uses as much as digits as its factorization.

2209515648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94405 (or 94393 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 2209515648 is about 47005.4852969310. The cubic root of 2209515648 is about 1302.4638968384.

The spelling of 2209515648 in words is "two billion, two hundred nine million, five hundred fifteen thousand, six hundred forty-eight".