2166662913 has 4 divisors (see below), whose sum is σ = 2888883888. Its totient is φ = 1444441940.

The previous prime is 2166662867. The next prime is 2166662923. The reversal of 2166662913 is 3192666612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166662913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2166662923) 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, 361110483 + ... + 361110488.

It is an arithmetic number, because the mean of its divisors is an integer number (722220972).

Almost surely, 2^2166662913 is an apocalyptic number.

It is an amenable number.

2166662913 is a deficient number, since it is larger than the sum of its proper divisors (722220975).

2166662913 is an equidigital number, since it uses as much as digits as its factorization.

2166662913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722220974.

The product of its digits is 139968, while the sum is 42.

The square root of 2166662913 is about 46547.4264916977. The cubic root of 2166662913 is about 1293.9885988467.

The spelling of 2166662913 in words is "two billion, one hundred sixty-six million, six hundred sixty-two thousand, nine hundred thirteen".