2166584401 has 8 divisors (see below), whose sum is σ = 2195607680. Its totient is φ = 2137601232.

The previous prime is 2166584359. The next prime is 2166584437. The reversal of 2166584401 is 1044856612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166584401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166584491) 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, 107911 + ... + 126403.

It is an arithmetic number, because the mean of its divisors is an integer number (274450960).

Almost surely, 2^2166584401 is an apocalyptic number.

It is an amenable number.

2166584401 is a deficient number, since it is larger than the sum of its proper divisors (29023279).

2166584401 is a wasteful number, since it uses less digits than its factorization.

2166584401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20055.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 2166584401 is about 46546.5831291621. The cubic root of 2166584401 is about 1293.9729688412.

The spelling of 2166584401 in words is "two billion, one hundred sixty-six million, five hundred eighty-four thousand, four hundred one".