2165647097 has 8 divisors (see below), whose sum is σ = 2235228000. Its totient is φ = 2097162144.

The previous prime is 2165647093. The next prime is 2165647109. The reversal of 2165647097 is 7907465612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2165647097 - 2² = 2165647093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165647093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269972 + ... + 277877.

It is an arithmetic number, because the mean of its divisors is an integer number (279403500).

Almost surely, 2^2165647097 is an apocalyptic number.

It is an amenable number.

2165647097 is a deficient number, since it is larger than the sum of its proper divisors (69580903).

2165647097 is an equidigital number, since it uses as much as digits as its factorization.

2165647097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547975.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 2165647097 is about 46536.5135887939. The cubic root of 2165647097 is about 1293.7863431427.

The spelling of 2165647097 in words is "two billion, one hundred sixty-five million, six hundred forty-seven thousand, ninety-seven".