2166199345 has 8 divisors (see below), whose sum is σ = 2599781760. Its totient is φ = 1732731120.

The previous prime is 2166199331. The next prime is 2166199361. The reversal of 2166199345 is 5439916612.

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

It is not a de Polignac number, because 2166199345 - 2²³ = 2157810737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2166199295 and 2166199304.

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, 21016 + ... + 69094.

It is an arithmetic number, because the mean of its divisors is an integer number (324972720).

Almost surely, 2^2166199345 is an apocalyptic number.

It is an amenable number.

2166199345 is a deficient number, since it is larger than the sum of its proper divisors (433582415).

2166199345 is an equidigital number, since it uses as much as digits as its factorization.

2166199345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57095.

The product of its digits is 349920, while the sum is 46.

The square root of 2166199345 is about 46542.4467019086. The cubic root of 2166199345 is about 1293.8963072265.

The spelling of 2166199345 in words is "two billion, one hundred sixty-six million, one hundred ninety-nine thousand, three hundred forty-five".